Best Free Authentication Software
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Compare the Top Free Authentication Software as of October 2025
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What is Free Authentication Software?
Authentication software verifies the identity of users or devices before granting access to systems, applications, or data, ensuring security and preventing unauthorized access. It supports various methods such as passwords, biometrics, multi-factor authentication (MFA), token-based authentication, and single sign-on (SSO) to provide flexible and robust identity verification. The software integrates with identity management systems and security frameworks to enforce access policies and monitor authentication events. By enhancing security and user experience, authentication software is critical for protecting sensitive information in industries like finance, healthcare, and government. It helps organizations comply with regulatory requirements and reduce the risk of breaches. Compare and read user reviews of the best Free Authentication software currently available using the table below. This list is updated regularly.
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1
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.Starting Price: Free -
2
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.Starting Price: Free plan -
3
Plaid
Plaid
Plaid is a global data network that powers the tools millions of people rely on to live a healthier financial life. Our ambition is to facilitate a more inclusive, competitive, and mutually beneficial financial system by simplifying payments, revolutionizing lending, and leading the fight against fraud. Plaid works with over 12,000 companies including fintechs like Venmo and SoFi, several of the Fortune 500, and many of the largest banks to empower people with more choice and control over how they manage their money. Headquartered in San Francisco, Plaid’s network spans over 12,000 institutions across the US, Canada, UK and Europe.Starting Price: Free -
4
FusionAuth
FusionAuth
FusionAuth provides a comprehensive authentication platform designed for flexibility, security, and developer ease. It supports a wide range of authentication methods including username/password, passwordless, multi-factor authentication (MFA), and social logins. FusionAuth is built API-first, allowing seamless integration into any tech stack or architecture. It supports industry protocols like OAuth2, OIDC, and SAML for secure and standards-compliant authentication. Whether deployed on-premises, in the cloud, or in hybrid environments, FusionAuth gives you full control over the user login experience while helping you meet compliance requirements such as GDPR, HIPAA, and COPPA.Starting Price: $0 -
5
Veriam
Veriam
Veriam goes beyond traditional authentication tools by combining identity management, access control, and subscription management into one secure platform. Unlike standalone authentication systems, Veriam's integrated platform reduces admin, cuts down on tools, and creates a better experience for users and service providers. Users only need one login to access products, subscriptions, and data from any organization using Veriam—improving security while making login fast and simple. Key Features: ✔️ Single Sign-On (SSO): Secure, flexible logins with Google, Microsoft, or email. ✔️ Role-Based Access Control: Assign roles and permissions for access based on user needs. ✔️ User Invites & Onboarding: Place new users in the right teams automatically with email invites. ✔️ Profile & Data Management: Users manage their profiles, access, and data preferences. ✔️ Security & Compliance: Veriam meets industry standards, ensuring data stays secure and private. Try us out today!Starting Price: Free -
6
MIRACL
MIRACL
World's fastest MFA with the highest login success rate above 99%. Highly secure, password-free login in just two seconds. MIRACL works on any device or browser, removing the barriers to authentication to optimise the the user experience, decrease costs, and win lost revenue. Protect your users. Simplify their journey. MIRACL Trust offers a safer, smoother authentication experience. One step. No passwords. No problem. Traditional multi-factor authentication is slow and cumbersome. MIRACL is a smoother, safer alternative to traditional MFA. 2 seconds to log in with error rates as low as 1/10th that of passwords. No passwords necessary. One PIN, and you’re in. Our cryptographic technology means that user info stays with users. MIRACL Trust offers an effortless login experience that puts users first, rolls out hassle-free, and keeps data locked up tight. PSD2 SCA compliant, GDPR compliant and satisfies NJ Gaming MFA requirements. -
7
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! -
8
GateKeeper Enterprise
Untethered Labs, Inc.
Passwordless, proximity login to PCs, Macs, websites, and desktop applications. Hands-free, wireless 2FA and password manager through active proximity-detection. IT admins can dynamically allow users to log in to their computers and websites with a physical key either automatically, by touch, by pressing Enter, or with a PIN. Seamlessly login, switch users, switch computers, and logout without passwords, touch, or trouble - just a key. Once a user walks away, the computer will lock, blocking access to the computer and web passwords. With continuous authentication, users are always being checked to ensure that they require access. No more typing passwords. Admins and compliance can now automate password security from a central admin console: enforce stronger passwords, enforce 2FA, and give employees the power of password-free login without interrupting workflow. Reduce helpdesk tickets related to forgotten passwords/password resets. Login and auto-lock with proximity.Starting Price: $3/user/month -
9
Google Authenticator
Google
Google Authenticator generates 2-Step Verification codes on your phone. 2-Step Verification provides stronger security for your Google Account by requiring a second step of verification when you sign in. In addition to your password, you’ll also need a code generated by the Google Authenticator app on your phone. You can use your Google Account to more easily and securely sign in to thousands of sites and services on the web, while keeping your privacy choices transparent in one place. Protect your Google Account with Security Checkup. This detailed tool provides you with personalized and practical recommendations to help you strengthen the security of your Google Account. Hacked passwords are more common than you think. Two-step verification protects you from unauthorized access to your account. To do this, it requests a second step after entering the password. -
10
Cisco Duo
Cisco
Cisco Duo is a cloud-based identity security solution that protects organizations from identity-based threats and boosts workforce productivity. Trusted by over 40,000 organizations worldwide, Duo delivers an exceptional access management experience across all users, devices, and applications, making access to resources secure, seamless, and easy. Duo with Cisco Identity Intelligence provides deep visibility across your identity ecosystem, adding a powerful security layer to any identity infrastructure. Offer users a world-class access experience through Duo Passport to eliminate MFA friction and fatigue without sacrificing security. To stop threats, Duo verifies user identities with strong authenticators including Duo passwordless, Verified Duo Push with number matching, and phishing-resistant factors like biometrics and FIDO2 security keys. Paired with deep insights into users’ devices, Duo gives you the control to adaptively limit access based on device health or user risk.Starting Price: $3 per user per month -
11
LastPass
LastPass
LastPass is a cloud-based password manager available on any system or device, ensuring credentials are protected, private, and always within reach. Simple to set up and effortless to use, LastPass delivers the world's most convenient password management experience for consumers and businesses of all sizes and technical requirements. Say goodbye to password fatigue by generating, sharing, accessing, and managing credentials at the click of a button, while preventing bad actors from accessing precious data and account logins. Businesses also utilize LastPass to consolidate their tech stacks or to fill access management gaps with native integrations for MS Entra, Okta, and other IdPs and IAMs. With over 100 customizable policies, flexible privileges, detailed reporting, MFA and passwordless authentication options, LastPass makes it easy for organizations with numerous logins and increasing security risks to standardize password management company wide.Starting Price: $4 per user per month -
12
Microsoft Authenticator
Microsoft
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. -
13
Protectimus
Protectimus Limited
Protectimus SAAS two-factor authentication service is already set up in the cloud and available 24/7, just register and begin the integration via API or using a ready-made integration plugin. The Protectimus On-Premise MFA platform can be deployed on the premises of your organization or in a private cloud. Radius, Citrix NetScaler and XenApp VMWare, Active Directory, LDAP, Windows Logon, and RDP, OWA, ADFS, RoundCube, Dynamic Passwords, API, SDK, customized individual development. Dynamic Strong Password Authentication integrates directly with Microsoft Active Directory (or any other user directory) to add a six-digit password onto users’ static passwords. Today, data violation happens regularly. If you want to assure your data is thoroughly protected, strong authentication methods are vital. We are likely to display personal info without any outside intervention. But when it comes to business, we would not limit user authentication and identification to a single password.Starting Price: $33 per month -
14
Rublon
Rublon
Rublon enables your workforce to securely access your organization's networks, servers and applications. Protect your data via easy-to-use multi-factor authentication and comply with data protection regulations like GDPR. Deploy Rublon organization-wide, enabling MFA for all your cloud apps, VPNs, servers, workstations, internal as well as on-premise apps.Starting Price: $1/month/user -
15
Quicklaunch
Quicklaunch
QuickLaunch is the #1 leader in Identity and Access Management (IAM) for Higher Education. More than 500 organizations trust QuickLaunch’s platform to manage over 2,000,000 identities and integrate over 3,000 applications worldwide. CIOs, CTOs, and CISOs use QuickLaunch IAM technologies to engage with students, faculty, and staff and protect them throughout their journey. QuickLaunch’s technology is vital in protecting the user experience, driving both operational efficiencies and higher productivity for colleges, universities, and institutions. Improves cyber security posture by protecting user accounts from being hacked and thwarting ransomware and phishing cyber attacks. Automatically provisions students from the Student Information System and employees from the Human Resources system so they can quickly get access to the apps they need when they matriculate and join.Starting Price: $0.73 per month -
16
passbolt
passbolt
Finally, a password manager built for collaboration. Secure, flexible, and automation-ready. Trusted by 10,000 organizations, including Fortune 500 companies, newspapers, governments, and defense forces. Passbolt servers are designed to be simple to install and easy to manage. Yet they are enterprise-ready and can support complex setup for high availability. Passbolt can be used from your browser or mobile phone. Sharing happens in real-time. Desktop apps are coming soon. Retrieve, store and share passwords programmatically with the JSON API. Automate at scale with Passbolt CLI. Real-time access logs. Privacy is in our DNA, but also in the DNA of European laws (to make sure we don’t change our minds). Passbolt self-hosted source code comes under an AGPL license. Yes, even the commercial version. You are free to audit it, contribute to it, and redistribute it. This is why we have a healthy community of thousands of organizations in all sectors.Starting Price: €45/month/10 users -
17
OneLogin
OneLogin
Secure critical company information and empower employees with OneLogin, a trusted identity and access management (IAM) solution for the modern enterprise. Designed to strengthen enterprise security while simplifying business logins, OneLogin is an excellent solution for companies looking to enforce security policies with ease. OneLogin includes top-rated features such as single sign-on (SS), unified directory, user provisioning, adaptive authentication, mobile identitiy, compliance reporting, and more. -
18
OpenIAM
OpenIAM
Identity Governance and Web Access Management. As new employees join your organization, you face the conundrum of ensuring that they are given rights to all the systems and resources they need to do their work on the day they join the firm. Similarly, when a person changes positions within the firm, access that is no longer relevant must be revoked and access that is needed for their new position must be granted. For the situation of users leaving the firm or being terminated, it is even more imperative that permissions be addressed. Access to sensitive applications and data must be disabled/removed in a timely manner with traceability to avoid the consequences of a disgruntled user. -
19
LoginTC
Cyphercor
Cyphercor is a two factor authentication provider that offers a best-in-class solution that's effortless, intuitive, and cost-effective called "LoginTC". LoginTC adds an additional layer of security to your systems and applications including VPNs, Firewalls, remote desktop, active directory, and more with it's innovative 2fa software. LoginTC offers a wide range of two factor options for end-users to authenticate, including SMS, email, push notifications, hardware tokens, U2F, OTP, bypass codes, and more. LoginTC was built with the principle that administrators are users too, and offers a solution that's not just easy for end users day-to-day, but is also simple for administrators to manage and setup. In fact, if you aren't set-up in one hour, the first month of your subscription is on us. LoginTC can help you reduce your insurance costs and meet compliance regulations with ease.Starting Price: $3/month/user -
20
Aerobase
Aerobase
Aerobase is an open-source Identity and access management (IAM) platform that specializes in identity federation, SSO, strong & adaptive authentication, access control, account management & identity provisioning, API & microservices security and privacy regulation. This guide helps you get started with Aerobase. It covers server configuration and use of the default database. Advanced deployment options are not covered. For a deeper description of features or configuration options, consult the other reference guides.Starting Price: $690 per month -
21
OpenOTP Security Suite
RCDevs
OpenOTP Security Suite is a European Enterprise-grade Security all-in-one Solution for Identity & Access Management (IAM), including : - Multi-Factor Authentication (MFA/2FA) with U2F / OTP, applicable even for Legacy Applications - Federation Services (SSO with OpenID & SAML / ADFS) - Network Access Control (protecting Wifi & Ethernet Swiches) - VPN security (via an included Radius Bridge), designed specifically for remote work - Windows logins & Remote Desktop Services (RDS) OpenOTP Security Suite combines mobile technology with proven security standards to offer professionals and non-professionals the best alternative, bringing modularity and flexibility to suit any infrastructure's needs. OpenOTP Security Suite is an enterprise-class European security solution designed for installation on-premises or in a private cloud. ++ Free Token App (and compatible with most existing hardware and software tokens) ++ Free 30-day Trial ++ Freeware (<25 users)Starting Price: €1.85/User/M -
22
HYPR
HYPR | The Passwordless Company
HYPR fixes the way the world logs in. Organizations are faced with the challenge of achieving secured and seamless authentication coupled with a flawless user experience at a time when it’s more critical than ever. HYPR’s passwordless multi-factor authentication (PMFA) platform decouples authentication from the organization’s current and future identity providers and eliminates the traditional trade-off between security and user experience by providing uncompromising assurance and consumer-grade experience with true passwordless and phishing-resistant MFA. The solution is trusted by more than 60M users worldwide. With deployments taking hours rather than weeks or months, organizations decrease the risk of attack, increase positive user experience, and lower operational costs.Starting Price: $4.00 per user/month -
23
Enzoic for Active Directory
Enzoic
Say goodbye to weak and compromised passwords with Enzoic for Active Directory—a simple, automated solution that keeps your organization secure without the hassle. Designed to work quietly in the background, Enzoic makes password protection effortless. - Effortless Security: Automatically screens and protects passwords 24/7. - Real-Time Breach Protection: Continuously updates to block passwords exposed in breaches. - Comprehensive Coverage: Secures entire credential sets, not just passwords. - User-Friendly Guidance: Blocks weak passwords like "123456" and helps users create safer ones. - Easy Compliance: Achieve NIST 800-63B compliance effortlessly. - Simple UX: Optional Windows client provides feedback without overwhelming IT teams. Backed by a cutting-edge database of billions of compromised passwords and updated daily, Enzoic ensures your organization stays ahead of security threats. Simplify security, protect your business, and empower your IT team with Enzoic.Starting Price: $0 -
24
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 HIPPA. We have SDKs for iOS, Android, React-Native, Web, Python, Java, and Node as well as a WordPress Plugin.Starting Price: Free -
25
Clerk
Clerk
Clerk is the user management and authentication platform built for developers. It provides complete solutions for sign-up, sign-in, user profiles, account switching, and multi-tenancy. Clerk integrates seamlessly with frameworks like Next.js, React, Vue, and Nuxt, offering secure APIs, prebuilt UI components, and powerful features like OAuth, SSO, and role management. With Clerk, you can skip building auth from scratch and ship production-ready authentication faster, while maintaining security, scalability, and a great user experience.Starting Price: $0 per month -
26
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 -
27
Edgenexus Load Balancer (ADC/WAF/GSLB)
Edgenexus
Choose us because we offer the easiest to use technology without sacrificing features or performance. We back this up with outstanding support and care, delivered under a fair and cost effective pricing model Our technology is used by the smallest startups with big ideas and small budgets all the way to global enterprises and anything in between. We love them all the same! Easy to use Load balancing, WAF, GSLB and SSO/Pre-Authentication. It is also the Only true ADP Application Delivery Platform where the functionality and lifespan can be enhanced using the app store or applications that you develop in house.Starting Price: $50 -
28
Konfirmi
Konfirmi
Konfirmi gives your website or app easy-to-setup verification (which you can combine or use standalone). Verification methods include: - 2 Factor Authentication / Multi Factor Authentication (2FA/MFA) - SMS/Email verification - True age verification (KBA Checks) - True customer name/address/info verification (KBA Checks) - Biometric Authentication - Single Sign On (SSO). Check age, addresses, photo IDs, more. Quickly add to any website or application. Comply with various USA and other laws. Small Business and Enterprise options. Konfirmi‘s patent-pending system allows you to automatically verify your customer’s information, including age, physical address, email address, phone number, and photo ID in any app, user sign up or registration page, e-commerce store, contact form or survey, or other web-facing system. Quickly start using Konfirmi in your website or application.Starting Price: $19 -
29
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 -
30
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