Alternatives to Clerk

Compare Clerk alternatives for your business or organization using the curated list below. SourceForge ranks the best alternatives to Clerk in 2026. Compare features, ratings, user reviews, pricing, and more from Clerk competitors and alternatives in order to make an informed decision for your business.

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    Frontegg

    Frontegg

    Frontegg

    Frontegg is a Customer Identity and Access Management (CIAM) platform that simplifies authentication, authorization, and user management for SaaS companies. It enables developers to implement advanced identity features quickly, then shift ongoing administration to other teams. With Frontegg, Product, Infosec, and Customer Success teams can take control of key identity tasks like managing user roles, enforcing security policies, and handling customer requests, all without engineering support. Developers reduce toil and regain focus on core product work, while stakeholders move faster without bottlenecks. Frontegg supports modern identity features including SSO, MFA, role-based access control, entitlements, multi-tenancy, and audit logs. Its low-code platform integrates in days and provides a user-friendly admin portal that bridges technical and non-technical teams. Frontegg increases operational efficiency, improves security posture, and enhances the customer experience.
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  • 2
    Auth0

    Auth0

    Okta

    Auth0 takes a modern approach to Identity, providing secure access to any application, for any user. Safeguarding billions of login transactions each month, Auth0 delivers convenience, privacy, and security so customers can focus on innovation. Auth0 is part of Okta, The World’s Identity Company™. Auth0 lets you quickly integrate authentication and authorization for web, mobile, and legacy applications, with new Fine Grained Authorization (FGA) that goes beyond role-based access control. Authenticate users across all applications with a customized, secure, and standards-based single login. Universal Login connects users to a central authorization server. Credentials aren’t transferred across sources, which boosts security and protects against phishing and credential stuffing attacks. OAuth 2.0 recommends that only external user agents (like the browser) be used by native applications for authentication flows. Auth0’s Universal Login achieves this while enabling SSO.
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  • 3
    FusionAuth

    FusionAuth

    FusionAuth

    FusionAuth is a modern, developer-focused identity and access management platform built to give you full control over your authentication stack. Whether you’re building a startup app or managing enterprise-scale infrastructure, FusionAuth delivers all the must-have features — from login and SSO to advanced protocols like OAuth2, OIDC, SAML, and WebAuthn — in a self-hostable or cloud-native package. Designed with developers in mind, FusionAuth integrates seamlessly with any language, framework, or architecture. Every capability is API-first and built for extensibility, so you can tailor authentication workflows without getting locked into rigid, inflexible systems. FusionAuth supports all the key use cases — user registration, multi-factor authentication (MFA), passwordless login, role-based access control, and more — while helping you stay compliant with GDPR, HIPAA, PCI, and other regulatory standards.
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  • 4
    Kinde

    Kinde

    Kinde

    Authentication happens at some of the most important, and highly impactful, places in your customers' journey. Take control of user authorization with a passwordless authentication, social integrations, and enterprise SSO. Support the branding of all your customers with custom domains and a fully customisable UI by bringing your own pages and designs. Integrate with complex requirements and run your own code during authentication using our powerful workflows. Organise all your business customers using organizations to easily segergate them and fine tune the authentication experience to their individual needs. Monetize your ideas quickly with Kinde's billing tools. Create subscription plans and collect revenue effortlessly. Kinde adapts to your business model, supporting B2C, B2B, and B2B2C with robust organization management and flexible billing logic that scales with your customers.
    Starting Price: Free
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    Auth Armor

    Auth Armor

    Auth Armor

    Harness the power of biometrics on smartphones to make authentication easy for any application or website, creating a new approach to logging and authenticating online. Passwordless and 2-factor authentication that lets you authenticate your users with the smartphones in their pockets. Auth Armor puts secure authentication in the hands of every user — no weak passwords or cumbersome codes. We have built powerful APIs, SDKs, libraries, and dashboards to allow you to build what you want to build, how you want to build it. Use our tools to build authentication into any app, using any flow you would like. We offer Consumer facing and workforce protection, giving you the power and flexibility to secure anything, the way you need it. Auth Armor is the fastest and easiest mobile authenticator available. We support instant push messaging directly to user's devices enabling the fastest login and authentication experience.
    Starting Price: FREE for 10,000 active users!
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    Authsignal

    Authsignal

    Authsignal

    Authsignal is a B2C consumer authentication and identity platform. Built to enable enterprise and mid-market business product and engineering teams the rapid capabilities to deploy omnichannel authentication and verification flows. Engineered to drop into existing architecture, Authsignal delivers the world's fastest path to uplifting and implementing passkeys and risk-based multi-factor authentication (MFA) flows without the need to overhaul your current identity stack, with seamless integrations for best-in-class identity platforms, such as AWS Cognito, KeyCloak, Azure AD B2C, and IdentityServer, Integration has never been this fast. Deploy with lightning speed, utilizing pre-built authentication flows or create customized UI experiences, leveraging Authsignal's React Native UI components, headless APIs, and mobile SDKs for iOS and Android. Optimizing user experience and balancing security is a breeze with Authsignal. With our No-code rules engine, create and deploy strong c
    Starting Price: $349 USD Per Month
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    Microsoft Entra ID
    Microsoft Entra ID (formerly known as Azure Active Directory) is a comprehensive identity and access management cloud solution that combines core directory services, application access management, and advanced identity protection. Safeguard your organization with a cloud identity and access management solution that connects employees, customers, and partners to their apps, devices, and data. Protect access to resources and data using strong authentication and risk-based adaptive access policies without compromising user experience. Provide a fast, easy sign-in experience across your multicloud environment to keep your users productive, reduce time managing passwords, and increase productivity. Manage all your identities and access to all your applications in a central location, whether they’re in the cloud or on-premises, to improve visibility and control.
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    Next Identity

    Next Identity

    Next Reason

    Next Identity is a comprehensive Customer Identity and Access Management (CIAM) platform designed to help businesses create secure, flexible, and seamless customer journeys. It offers features such as passwordless authentication, multi-channel communication, and unified account management to streamline onboarding and improve customer experience. Next Identity enables businesses to manage millions of users with scalable security, modern orchestration, and advanced analytics, all while offering customizable workflows and integrations for digital transformation.
    Starting Price: $29/month
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    NextAuth.js

    NextAuth.js

    NextAuth.js

    NextAuth.js is an open source authentication solution tailored for Next.js applications, offering seamless integration with popular services like Google, Facebook, Auth0, and Apple. It supports various authentication methods, including OAuth 1.0 & 2.0, email/passwordless sign-ins, and custom username/password systems. Designed for flexibility, NextAuth.js operates efficiently in serverless environments and supports multiple databases such as MySQL, PostgreSQL, MSSQL, and MongoDB, allowing developers to choose between database sessions or JSON Web Tokens (JWT). Security features include signed, prefixed, server-only cookies, HTTP POST with CSRF token validation, and encrypted JWTs using JWS/JWE/JWK standards. The platform facilitates easy setup, enabling developers to add authentication in minutes with minimal configuration. Comprehensive documentation and a supportive community further enhance its accessibility for developers seeking a robust authentication system.
    Starting Price: Free
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    PropelAuth

    PropelAuth

    PropelAuth

    Easy integration and straightforward APIs for developers. Built-in user management for customer-facing teams. Data and insights for PMs and executives. PropelAuth was founded on the idea that a great auth product gets out of your way. We provide you with the right tools out of the box, so you can quickly make your users' experiences as secure and smooth as possible. As soon as you start onboarding users, your team will have a laundry list of things they need to do or see. Organizations are a first-class concept in PropelAuth. You can use our UIs to get started quickly or build your own with our APIs. Start with our default roles, or create your own. We even handle updating existing users when you make changes. The easiest way to integrate with identity providers, like Okta and Azure AD. We provide guides for your users to set up and test their configuration. Set custom session durations per organization, enforce MFA, and more. We handle the complexity so you don't have to.
    Starting Price: $150 per month
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    MonoCloud

    MonoCloud

    MonoCloud

    MonoCloud is a developer-focused platform designed to streamline authentication, authorization, and user management for applications across multiple environments, including web, mobile, IoT devices, and more. It enables developers to easily integrate secure and customizable login processes, supporting a range of authentication methods such as passwords, magic links, one-time passcodes, and social logins like Google, Facebook, and Apple. Built with a strong emphasis on reducing user friction, MonoCloud offers a branded and smooth authentication experience. The platform includes advanced features such as mutual TLS, brute-force protection, and global session management, making it a comprehensive solution for handling user access across various applications and devices. In addition, MonoCloud is designed with developers in mind, providing extensive documentation, integration guides, and support for various front-end and back-end frameworks.
    Starting Price: $0
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    Descope

    Descope

    Descope

    Descope is a drag-and-drop customer authentication and identity management platform. Our no / low code CIAM solution enables developers to easily create and customize their entire user journey using visual workflows – from authentication and authorization to MFA and federation. Descope also provides a connectors ecosystem with dozens of third-party services for use cases such as identity verification, fraud prevention, risk-based authentication, and identity orchestration. Descope is built on a scalable multi-tenant architecture with high availability that can support advanced enterprise requirements. Customers use Descope to improve their user onboarding with passwordless authentication, enhance security with MFA and step-up controls, and unify customer identities across business properties. Founded in 2022, Descope is backed by Lightspeed and GGV and is a member of the FIDO Alliance.
    Starting Price: $0.05 per user per month
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    Auth.js

    Auth.js

    Auth.js

    Auth.js is an open-source authentication library designed to integrate seamlessly with modern JavaScript frameworks, providing a flexible and secure authentication experience. It supports various authentication methods, including OAuth (e.g., Google, GitHub), credentials, and WebAuthn, allowing developers to choose the most suitable approach for their applications. Auth.js is compatible with multiple frameworks, such as Next.js, SvelteKit, Express, Qwik, and SolidStart, enabling developers to implement authentication across different platforms. The library offers built-in support for popular databases like Prisma, Drizzle ORM, Supabase, Firebase, and TypeORM, facilitating user data management. Security features include signed cookies, CSRF token validation, and encrypted JSON Web Tokens (JWTs), ensuring robust protection for user data. Auth.js is designed to operate efficiently in serverless environments and provides comprehensive documentation and examples.
    Starting Price: Free
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    SaaS UI

    SaaS UI

    SaaS UI

    Saas UI is a purpose-built toolkit designed to expedite the development of high-quality applications by providing a comprehensive suite of React components and starter kits. It offers over 40 open-source components, including authentication screens compatible with services like Clerk, Supabase, and Magic, fully functional forms utilizing React Hook Form, and data tables powered by React Table. Built atop industry-leading libraries such as Chakra UI, React Query, and Recharts, Saas UI ensures accessibility by adhering strictly to WAI-ARIA standards and supports full customization through theming and style props. The platform includes a Figma design system, aligning design and development processes seamlessly. Saas UI Pro extends these capabilities with advanced components and tools for billing, onboarding, feature management, and sign-up flows, accompanied by a boilerplate app compatible with Next.js and Electron.
    Starting Price: €197 one-time payment
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    Authorizer

    Authorizer

    Authorizer

    Build secure apps 10x faster. Low code tool and low cost deployment. Own your user data in your preferred database. Authenticate users with multiple auth recipes. Authorize users based on your business roles. OAuth2 and OpenID compatible APIs. Authentication and authorization have never been this simple before. Deploy production-ready Authorizer instance using one-click deployment options available. Open Authorizer instance endpoint in the browser. Sign up as an admin with a secure password. Configure environment variables from the dashboard. Authorizer object can be instantiated with JSON object. You can use Authorizer off the shelf and provide an amazing digital experience in just 3 minutes. We rather have you focused on your core business and build stuff that matters. Auth with best services baked in. Secure Session management implemented with HTTP-only cookies. Authorization Code flow implemented for mobile-based auth.
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    SaaS Starter Kit

    SaaS Starter Kit

    SaaS Starter Kit

    SaaS Starter Kit is a modern, fully featured SaaS template designed to accelerate the development of Next.js applications. It incorporates a comprehensive suite of features, including subscription payments through Lemon Squeezy or Stripe, a complete authentication flow with magic email sign-in and social OAuth login, and subscription management via customer portals. The kit supports roles and permissions for fine-grained access control, and multi-tenancy allowing users to create organizations and invite team members, and a modern, SEO-optimized blog. Email workflows are streamlined using Resend and React Email, while the user interface is crafted with Shadcn and Tailwind CSS, ensuring easy customization and extension. The template is mobile-friendly, offers a fully integrated dark theme, and provides dedicated support through Discord or Reddit. Users benefit from lifetime free updates and extensive, up-to-date documentation, facilitating quick onboarding and codebase comprehension.
    Starting Price: $87 one-time payment
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    Skillmine Auth

    Skillmine Auth

    Skillmine Technology Consulting

    Skillmine Auth is a comprehensive Identity and Access Management (IAM) platform that enables organizations to securely manage user identities, access control, and authentication across all business applications. It supports modern standards like SAML, OAuth 2.0, and OpenID Connect, along with custom authentication for legacy systems. Skillmine Auth offers flexible deployment options (Cloud or On-Premises) and integrates seamlessly with Active Directory, HRMS, and other enterprise systems to deliver unified and secure user experiences.
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    AgentAuth

    AgentAuth

    Composio

    AgentAuth is a specialized authentication platform designed to facilitate secure and seamless access for AI agents to over 250 third-party applications and services. It offers comprehensive support for various authentication protocols, ensuring reliable connections with automatic token refresh. The platform integrates seamlessly with leading agentic frameworks such as LangChain, CrewAI, and LlamaIndex, enhancing the capabilities of AI agents. AgentAuth provides a unified dashboard for complete visibility into user-connected accounts, enabling efficient monitoring and issue resolution. It also offers white-labeling options, allowing customization of the authentication process to align with product branding and OAuth developer applications. Committed to high-security standards, AgentAuth complies with SOC 2 Type II and GDPR, employing strong encryption for data protection.
    Starting Price: $99 per month
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    MakerKit

    MakerKit

    MakerKit

    MakerKit is a comprehensive SaaS starter kit designed to accelerate the development of web applications using frameworks like Next.js and Remix. It offers a suite of pre-built features, including authentication flows with support for passwords and social logins; multi-factor authentication via Firebase or Supabase Auth; and billing and subscription management through Stripe or Lemon Squeezy. The platform facilitates multi-tenancy, allowing users to belong to multiple organizations and switch between them or use personal accounts. A Super Admin panel enables management, impersonation, or disabling of users. MakerKit utilizes Shadcn UI and Tailwind CSS for component building, providing both dark and light themes to enhance user experience. It includes a blog and documentation/help center to assist users in understanding the product, with a mobile-friendly design ensuring accessibility across devices.
    Starting Price: $299 one-time payment
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    Civic

    Civic

    Civic Technologies

    Civic is redefining how teams sign in and get work done with its two core solutions: Civic Auth and Civic Nexus. Civic Auth delivers a simple, secure sign-in experience that works across apps, servers, and assistants, combining Web2 ease with Web3 readiness. Civic Nexus unifies data, SaaS apps, and AI tools into intelligent workflows that automate everything from simple tasks to complex business processes. Together, they create a foundation of trust and efficiency, reducing friction at every step. Developers can integrate Civic with a 5-minute SDK setup and flexible prompts. The result is faster onboarding, safer authentication, and smarter automation for modern teams.
    Starting Price: $37.50 per month
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    Logto

    Logto

    Silverhand

    Logto is an Auth0 alternative designed for modern apps and SaaS products. It offers a seamless developer experience and is well-suited for individuals and growing companies. 🧑‍💻 Comprehensive identity solution Enables easy authentication with Logto SDKs. Supports multiple passwordless and social sign-in methods. Offers customizable UI components to match your brand. 📦 Out-of-the-box infrastructure eliminates the need for extra setup. Provides ready-to-use Management API Offers flexible connectors for customization and scaling, and is customized with SAML, OAuth, and OIDC protocols. 💻 Enterprise-ready with role-based access control (RBAC), organizations (multi-tenant apps), user management, audit logs, single sign-on (SSO), and multi-factor authentication (MFA).
    Starting Price: $0
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    OAuth

    OAuth

    OAuth.io

    Focus on your core app and get to market faster. OAuth.io handles identity infrastructure, maintenance, and security overhead, so your team doesn’t have to. Identity can be difficult, OAuth.io makes it easy. Choose identity providers, add custom attributes, customize your login page or use our widget, integrate with your app - identity solved in minutes. Manage your users from our easy to use dashboard - find and manage users, reset passwords, enforce two-factor authentication, and add memberships and permissions through OAuth.io's simple and easy to use User Management. Fully-featured, hyper-secure user authentication using passwords or tokens. From multi-tenant to complex permissions, OAuth.io has your user authorization modeling covered. Force a second factor of user authentication with our popular integrations.
    Starting Price: $19 per month
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    Ory

    Ory

    Ory

    The missing web-scale API for identity and access control. 10x your security, user experience, and PII compliance today. Build secure apps on top of the Ory Network and reach new customers in any geopolitical region of the world with the best login experience ever. Login is more than a username and password. Building it from the ground up is time-consuming and dangerous. Ory's API-first microservice architecture makes it straightforward to integrate projects at any stage. Pay for usage, not features. Get advanced multi-factor to auth on every Ory subscription plan. Plus advanced permissions, SSO, OAuth2, OIDC, multi-tenancy, and so much more. Ory is made for high-performance, high-scale applications in any cloud. Built with developers in mind, Ory lets you quickly build your on-brand user experience and integrate it into your software stack. Ory's focus on open standards and automated data import capabilities makes migrating from legacy systems straightforward.
    Starting Price: $29 per month
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    Rocket

    Rocket

    Rocket

    Rocket is a comprehensive SaaS boilerplate designed to expedite the development of production-ready applications using Node.js, React, and MongoDB. It offers a suite of features including advanced JWT authentication with protection against CSRF and XSS attacks, social OAuth authentication via Passport.js supporting providers like GitHub, Facebook, Google, and Twitter, and integrated subscription management and billing through Stripe. The platform supports multi-tenancy with team functionalities, allowing users to create teams and collaborate seamlessly. Developers benefit from a responsive UI built with Tailwind CSS, pre-built components such as forms, tables, models, and cards, and a centralized error-handling mechanism. Rocket also provides Docker support for streamlined deployment, automatic SSL certificates via Let's Encrypt, and a Node.js REST API with validation and built-in documentation.
    Starting Price: $249 per project
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    MoonClerk

    MoonClerk

    MoonClerk

    MoonClerk is an easy-to-use recurring payment system for professionals, businesses, and organizations of all types and sizes. With MoonClerk, anyone can accept recurring and one-time payments immediately--no coding required. The app lets users embed checkout forms from anywhere and have payments sent directly to their bank accounts.
    Starting Price: $15.00/month
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    Microsoft Authenticator
    Go passwordless. Enter your username and confirm your sign-in with your phone. It’s that easy! Passwords can be forgotten, stolen, or compromised. With Authenticator, your phone provides an extra layer of security on top of your PIN or fingerprint. Use Authenticator to sign-in to Outlook, OneDrive, Office, and more. Protect all of your accounts with two-step verification. The app also helps you secure all of your online accounts by using the industry standard time-based OTP (one-time password) codes.
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    ZITADEL

    ZITADEL

    ZITADEL

    ZITADEL is an open-source identity and access management platform designed to simplify authentication and authorization for applications. It offers a comprehensive suite of features, including customizable hosted login pages, support for modern authentication methods such as Single Sign-On (SSO) and social logins, and enforcement of multifactor authentication to enhance security. Developers can integrate authentication directly into their applications using ZITADEL's APIs or build dedicated login interfaces. The platform supports role-based access control, allowing for precise permission assignments based on user roles, and is inherently multi-tenant, facilitating easy extension of applications to new organizations. ZITADEL's extensibility enables seamless adaptation to various workflows, user management processes, and brand guidelines, with features like ZITADEL Actions that execute workflows after predefined events without the need for additional code deployment.
    Starting Price: $100 per month
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    Smart Clerk

    Smart Clerk

    Smart Clerk

    Smart Clerk is an AI-powered tool designed to transform financial documents into bookkeeper-ready reports, streamlining financial management for small and medium-sized businesses. By processing bank and credit card statements, Smart Clerk automates data extraction, categorizes transactions, and generates comprehensive financial reports, eliminating the need for manual data entry. Users can upload statements directly to the platform, where the AI swiftly handles various formats from any financial institution. The tool offers customizable transaction categorization tailored to specific business needs, and for those uncertain about category selection, the AI provides recommendations based on business descriptions. Additionally, Smart Clerk enhances vendor management by automatically matching vendor names, even when abbreviated, allowing users to view balances, invoices, and transactions in a centralized location.
    Starting Price: $29 per month
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    HyperSaaS

    HyperSaaS

    HyperSaaS

    HyperSaaS is a comprehensive SaaS boilerplate designed to accelerate the development of scalable applications by integrating modern technologies. The front end utilizes React 18 and Next.js 14 with the app router, employing TypeScript and Zod for type safety, and Tailwind CSS for rapid, responsive design. Server-side rendering enhances SEO and improves initial page load performance. The backend is built with Python 3.11, Django, and Django REST Framework, providing a robust and secure API suitable for complex web applications. HyperSaaS includes secure user authentication managed by NextAuth, seamless Stripe integration for subscription payments, and multi-tenancy with workspaces, enabling efficient team management and data security. The development environment is streamlined with Docker and Docker Compose, ensuring consistency across multiple environments.
    Starting Price: $129 one-time payment
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    OmniDefend
    OmniDefend secures your employees, contractors and vendors by using strong authentication and universal single sign-on to access and secure business applications and processes. OmniDefend eliminates customer fraud by using multi-factor authentication to identify and secure customer transactions online or on-premise. OmniDefend allows you to quickly add authentication to your website so you can deliver a password-less experience for your customers and secure e-commerce transaction. When it comes to security, OmniDefend implements standards that have been proven in the industry. OmniDefend supports OpenId, OAuth 2.0, and SAML for maximum compatibility and security for single-sign on applications. SCIM 2.0 allows OmniDefend to work seamlessly alongside identity management and user provisioning.
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    BlueClerk

    BlueClerk

    BlueClerk

    Field service software solutions, better relationships with customers. The first SaaS platform that is IoT centered. Connect units to the cloud and see in real-time how efficient contractors and employees are. BlueClerk allows businesses to log work, track inventory, and much more. Tap the phone to the tag to get access to the machine and update work performed. BlueClerk software is a CRM and work management solution for businesses that have workers in the field. Our BlueTags can be programmed through the mobile app, with no technical experience required. BlueTags are scanned by users to record work and view past history. Viewing history not only saves time, but also creates a safer environment for technicians. The origins of BlueClerk started with the founder, Chris Norton and his fitness equipment company. Chris developed the software for his technicians to scan and record work and changes with customers exercise machines.
    Starting Price: $30 per user per month
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    Steve the Clerk

    Steve the Clerk

    Steve the Clerk

    Steve the Clerk is a CPQ software that enhances the information flow of your business. In other words, it is enabling your salespeople to effortlessly create accurate and flawless quotes, orders and other documents of your customized products and services. Steve enables your salespeople to quickly generate accurate and comprehensive quotes and other documents. To make it clear, you can create these documents for both internal and external needs. As a result, Steve the Clerk CPQ software helps you to achieve efficient and effortless information flow. Companies often manifest how customer-focused they are, yet at the same time, their processes are not supporting this idea. Instead of your salespeople spending most of their time on preparing quotes, finalising orders and double-checking the information on the documents, Steve the Clerk enables them to really have the time to focus on the customer, which will result in more and better sales as well as happier and more loyal customers.
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    Trusona

    Trusona

    Trusona

    Trusona, the pioneering leader of passwordless authentication for digital businesses, provides a phishing-resistant alternative to passwords and SMS OTPs. Trusona Authentication Cloud is a passkey-as-a-service platform, offering the simplest, quickest and least expensive way to add passkeys to your website. It improves business growth and profitability with sign-ins that delight your customers, mitigating top threats like phishing and account takeovers (ATOs) while providing a UX designed for the way people live. Organizations in iGaming, travel, financial services, healthcare and more, trust Trusona for their passwordless authentication initiatives.
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    LoginRadius

    LoginRadius

    LoginRadius

    LoginRadius empowers businesses to deliver a delightful customer experience without compromising security. Using our customer identity platform, companies can offer a streamlined login process while protecting digital accounts and complying with data privacy regulations. LoginRadius serves over 3,000 businesses with a monthly reach of 700 million users worldwide. Key platform features include registration services, adaptive security, integration with third-party applications, and customer insights. The company has been named an industry leader in customer identity and access management (CIAM) by Gartner, KuppingerCole, and Computer Weekly. Microsoft is a major technology partner and investor. LoginRadius is headquartered in Vancouver, Canada, with additional offices in Toronto, USA, United Kingdom, Australia, and India. LoginRadius Services: API Authentication OAuth Data Management Secure Login Single Sign On SAML SSO Social Sign On Two Factor Authentication
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    UploadThing

    UploadThing

    UploadThing

    UploadThing is an open source file upload solution designed for full-stack TypeScript applications. It simplifies the process of adding file uploads by allowing developers to define File Routes that specify the types of files allowed, their sizes, and quantities. It provides SDKs for various frameworks, including Next.js, Astro, SolidStart, SvelteKit, and Nuxt, as well as backend adapters for Express, Fastify, H3, and others. Client-side uploads are facilitated through components and hooks, enabling seamless integration with frontend frameworks like React and Vue. UploadThing emphasizes a balance between security and simplicity by handling authentication on the developer's server while managing the upload process on its own infrastructure. This approach allows for server-side authorization without the need to process files on the developer's server.
    Starting Price: $10 per month
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    Asgardeo
    Asgardeo helps developers implement secure authentication flows to applications in a few simple steps. Easily integrate single page, regular web, and mobile applications. SDKs that enable working with various technology stacks. Enable social sign-in with Google, Facebook, and GitHub using pre-defined templates (with more to follow). Configure external identity providers that can connect with open standards like OpenID Connect and SAML to your application. Manage your customers, employees, and partners with (default) supported onboarding and management workflows. Use Asgardeo provided directory or plug in your own LDAP or Active Directory via an agent. Choose from a variety of methods such as Email OTP, SMS OTP, and TOTP for 2FA. Define multiple steps and configure options according to user requirements. Unlock the full application experience by focusing on the business logic and enable login and secure access to end-users.
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    Nextacular

    Nextacular

    Nextacular

    Nextacular is an open source starter kit designed to expedite the development of full-stack, multi-tenant SaaS applications. Built with modern technologies such as Next.js, Tailwind CSS, and Prisma, it offers a suite of out-of-the-box features to streamline the development process. These features include authentication via magic links and social logins through NextAuth, database integration with relational databases like PostgreSQL and MySQL, and multi-tenancy support to serve multiple customers across different subdomains or custom domains using a single unified codebase. Nextacular also provides teams and workspaces functionality, allowing users to invite team members to collaborate within workspaces. The platform includes a customizable landing page, billing and subscription management through Stripe integration, and simple design components built with Tailwind CSS that can be configured according to your design system.
    Starting Price: Free
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    ThumbSignIn

    ThumbSignIn

    ThumbSignIn

    Any channel, any device – we’ve got you covered. Choose from our suite of user-friendly authentication solutions, from 2FA to passwordless biometrics, to find the right authentication for your business and users. Start with 2FA and progress to more advanced technology like biometrics-based authentication to continue improving user experience and security over time. Our SaaS-based authentication service, REST APIs , mobile SDKs and UI widgets deliver a powerful combination of software components that can be used to build omni-channel authentication experiences that span mobile, web, phone, IoT, chatbots, kiosks, physical access and more. It’s time to take the security burden off of users! Our mission is to democratize access to strong authentication technology and make the digital world safer for everyone. ThumbSignIn provides cost-effective, scalable SaaS-based solutions to help companies select the best way to strengthen their existing systems with two-factor authentication (2FA).
    Starting Price: $3 per user per month
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    Rownd

    Rownd

    Rownd

    Rownd is an innovative authentication platform designed to provide secure and user-friendly authentication methods for websites and mobile apps. By offering a variety of authentication options, such as email-based, SMS-based, social sign-ins, web3 wallets, and passkeys, Rownd simplifies the user experience while maintaining strong security measures. The platform features passwordless sign-ins, pre-built and fully customizable UI components, and quick integration through lightweight SDKs and APIs, accommodating both no-code tools and custom tech stacks. Rownd's adaptive authentication tailors the sign-in experience based on user devices, enhancing convenience and security. Additionally, it provides comprehensive user management with self-service profiles and an admin dashboard, along with powerful analytics to help teams understand user interactions and optimize sign-ins.
    Starting Price: $50 per month
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    Modern MERN

    Modern MERN

    Modern MERN

    Modern MERN is a comprehensive Node.js SaaS boilerplate designed to accelerate the development of SaaS products by providing a robust foundation built with the MERN stack, MongoDB, Express.js, React, and Node.js. It incorporates modern technologies such as Next.js, TypeScript, Tailwind CSS, Prisma, and Serverless architecture on AWS, ensuring scalability and maintainability. The boilerplate includes essential features like authentication (supporting email/password, Google, Facebook, Apple, and Amazon logins), multi-tenancy with team management, subscription payments via Stripe integration, and an admin dashboard for efficient user and team oversight. Developers benefit from a clean code architecture adhering to solid principles, pre-built responsive UI components, multi-theme support, and a mobile-first design approach. The platform emphasizes high-quality code standards, incorporating tools like ESLint, Prettier, Husky, and TypeScript, alongside comprehensive testing.
    Starting Price: $699 per project
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    Authsmith

    Authsmith

    Authsmith

    Authsmith is a cloud-based authentication platform that simplifies securing and managing user access for applications. The system supports multiple authentication methods including email/password, social logins, and single sign-on, creating a streamlined login experience. The platform includes analytics capabilities that provide insights into user activity and authentication metrics, allowing administrators to monitor system health and identify potential security concerns. Authsmith features multi-factor authentication and automated security alerts that help prevent unauthorized access and maintain compliance with industry standards. User management tools within Authsmith enable control over roles and permissions from a centralized dashboard. The platform offers API access for developers to integrate authentication features into their applications. Authsmith delivers a comprehensive solution for managing user access while maintaining strong security measures.
    Starting Price: $30
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    LoginID

    LoginID

    LoginID

    With just a few lines of code, LoginID enables websites and apps to integrate FIDO/FIDO2 certified multi-factor authentication via our easy to use SDKs and APIs. Our platform leverages the biometrics on the end user's device to create a private key, public key pair that allows for seamless strong customer authentication. No app installation is required and the private key is stored securely on the end user's device, never leaving. Additionally, LoginID offers Transaction Confirmation, where a transaction can be cryptographically signed providing proof of the user’s confirmation of that specific transaction, which is perfect for merchants who want payment authentication services. LoginID is aligned with PSD2, GDPR, CCPA, and HIPAA. We have SDKs for iOS, Android, React-Native, Web, Python, Java, and Node as well as a WordPress Plugin.
    Starting Price: Free
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    PowerManager Plus
    In this mobile digital era, you may want to consider offering this option to your retail customers as more customers are expecting this level of customer service. PowerManager® is a powerful software package that allows users to handle a diverse range of tasks, including payroll, inventory, billing, accounts receivable, general ledger, accounts payable, budget projection and many more functions. The ultimate time-saver – EasyClerk® produces bills for water, sewer, refuse and contracted services. Whittle down a week of billing work to just one day with EasyClerk®. The program customizes bills, courtesy notices and meter sheets. It can print bills in route book order or any combination of alphabetical, zip code, mailing pull codes or carrier route. Service Order tracks and manages service orders electronically, resulting in improved efficiency with fewer tasks slipping through the cracks and more satisfied customers.
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    OneSpan Authentication Servers
    Secure access and transactions by deploying multi factor authentication and transaction signing capabilities at mass scale​. Leverage proven authentication server and API technologies to secure access and transactions and streamline identity management​. Use strong authentication to secure access to corporate resources and banking applications. Enable highly secure transaction signing with user friendly Cronto® technology. Simplify authentication lifecycle management via a single integrated system. Easily support new standards in application and network access security for most major operating systems and platforms. Ensure business continuity – eliminate server downtime and service disruptions. Deploy server solutions regardless of operating system or architecture. OneSpan server solutions validate authentication requests to offer secure and seamless access to a variety of corporate resources and applications.
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    Visual Guard
    Visual Guard is an advanced identity and access management (IAM) tool offering a complete solution for securing sensitive applications and data. With centralized management of users and permissions, Visual Guard facilitates the implementation of robust, standards-compliant security policies. User management : Create, modify & delete user accounts Integration with LDAP or Active Directory directories Automatic synchronization of user information Access control : Precise definition of access rights to features and resources Role and Permission Management Multi-factor authentication (MFA) Single Sign-On (SSO) Security Audit and Monitoring : Permission Matrix Detailed Event log Real-time and Historical Graphs Integration & compatibility : Compatibility with major development platforms, frameworks, and protocols. .NET API Benefits : Simplified access management Enhanced data security Improved regulatory compliance Reduce identity management cost
    Starting Price: 1.55/month/user
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    ShipFast

    ShipFast

    ShipFast

    ShipFast is a Next.js boilerplate designed to expedite the development of SaaS applications, AI tools, and various web apps, enabling entrepreneurs to launch their startups in days rather than weeks. It integrates essential features such as user authentication via NextAuth with support for Google OAuth and Magic Links, payment processing through Stripe or Lemon Squeezy, and email functionalities using Mailgun, including DNS setup to prevent spam folder issues. The platform supports databases like MongoDB and Supabase, providing flexibility in data management. ShipFast also offers built-in SEO optimization, a blog setup, and a collection of UI components and animations to enhance user experience. Comprehensive documentation and tutorials guide users through setup and deployment, aiming to minimize time spent on repetitive tasks and allowing focus on core business development.
    Starting Price: $199 per month
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    Tuurio ID

    Tuurio ID

    Tuurio GmbH

    Tuurio ID is a white-label identity and authentication platform designed for developers, agencies, and SaaS companies that want to implement secure login systems quickly. The platform allows teams to build and deploy branded authentication flows—including passkeys, multi-factor authentication, and social logins—without maintaining their own identity infrastructure. With EU-hosted data, GDPR compliance, and multi-tenant architecture, Tuurio ID enables organizations to create secure login systems on their own domains while maintaining full control over branding and user management.
    Starting Price: 39€/month (up to 5000 users)
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    Skyclerk

    Skyclerk

    Skyclerk

    Accounting & Bookkeeping for freelancers. Skyclerk has made bookkeeping a breeze for over 10 years and counting. Sign up to make accounting easy again. Skyclerk is one price with unlimited access. No need to worry your self trying to pick the right plan. Upon login, all you need is one quick glance to know how well your business is doing. With Snap!Clerk we turn your receipts into data. Get paper off your desk and onto your ledger.
    Starting Price: $6 per month
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    Oso Cloud
    Customers want features that you can’t build without a refactor. Your code is hand-rolled, fragile and hard to debug. It’s spread throughout the codebase and relies on data from multiple sources. There’s no one place to see who has access to what, that authorization is working, or why requests are or are not authorized. Lay out who's allowed to do what in Workbench, our visual rules editor Start with primitives for common patterns like multi-tenancy and RBAC Extend your logic with custom rules in Polar, our configuration language for authorization. Send core authorization data, like roles and permissions. Make authorization checks and filter lists based on authorization where you used to have IF statements and custom SQL.
    Starting Price: $149 per month
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    next-forge
    A mono repo template designed to have everything you need to build your new SaaS app as quickly as possible. Authentication, billing, analytics, SEO, database, ORM, and more, it's all here. Start building your app with a shadcn/ui template that's already set up with everything you need, Tailwind, Clerk, and more. Create an API microservice for many different apps, with a type-safe database ORM. Create and preview email templates with a React-based email library. A blocks website template with a type-safe blog, bulletproof SEO, and legal pages, powered by Content Collections. Simple, beautiful out of the box, and easy-to-maintain documentation. Use Prisma Studio to visualize your database, and generate Prisma client code. Get from zero to production in minutes.