Best Authentication Software for Linux
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Compare the Top Authentication Software for Linux as of August 2025
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What is Authentication Software for Linux?
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 Authentication software for Linux currently available using the table below. This list is updated regularly.
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1
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 -
2
Sumsub
Sumsub
Sumsub is a full-cycle identity authentication platform that secures every step of the user journey. With Sumsub’s customizable KYC, KYB, AML, Transaction Monitoring and Fraud Prevention solutions, you can orchestrate your verification process, welcome more customers worldwide, meet compliance requirements, reduce costs and protect your business. Sumsub achieves the highest conversion rates in the industry—91.64% in the US, 95.86% in the UK, and 97.89% in Hong Kong—while verifying users in less than 50 seconds on average. Sumsub’s methodology follows FATF recommendations, the international standard for AML/CTF rules and local regulatory requirements (FINMA, FCA, CySEC, MAS, BaFin). Sumsub has over 2,000 clients across the fintech, crypto, transportation, trading, e-commerce and gaming industries including Bitpanda, Wirex, Avis, Bybit, Huobi, Kaizen Gaming, and TransferGo.Starting Price: $1.35 per verification -
3
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. -
4
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 -
5
Authy
Twilio
Enable 2FA for your favorite sites. Go beyond the password and protect yourself from hackers and account takeovers. Simple to setup, secure cloud backup, multi device support. Defeat cyber criminals & avoid account takeovers with stronger security, for free! Watch the video below to learn more about why you should enable 2FA for your accounts. Relying on just usernames and passwords to secure your online accounts is no longer considered safe. Data breaches occur daily and hackers are always inventing new ways to take over your accounts. Protect yourself by enabling two-factor authentication (2FA). This blocks anyone using your stolen data by verifying your identity through your device. Enable 2FA now to protect your accounts online. -
6
Cipherise
Cipherise
With over 5000 SAML integrations, experience seamless and secure connections with Cipherise - the platform that offers infinite ways to connect with your employees and customers. By integrating with Cipherise, you can easily build authentication into any app, and offload customer identity management to create delightful experiences quickly. With Cipherise's mutual, bi-directional authentication, you get the security, scalability, reliability, and flexibility to build the stack you need. You will know the person who registered continues to be that person, and they know you are you. Plus, you can protect and enable your employees, contractors, and partners with Cipherise enterprise solutions - no matter where they are. One of the key features, that separate Cipherise from all others - Cipherise eliminates Mass Data Breaches. An attack is limited to one user on one system. Additionally, we store no passwords. Cipherise streamlines your identity and access management needs.Starting Price: $30 per user per month -
7
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 -
8
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 -
9
Routee
AMD Telecom
Routee is an intelligent omnichannel communication platform (CPaaS) offering advanced Web and API automation for all industries worldwide. Powered by AMD Telecom’s robust infrastructure, Routee's services enable businesses to optimize their marketing & business processes. -SMS Marketing: tailor-made messages based on customers' individual preferences -Email Marketing: personalized newsletters & email campaigns based on an audience's behavioral data -Transactional Email: automated emails to customers on important data regarding their transactions -Marketing Automation: rich forms & customer data capture, automation of repetitive marketing tasks, and tracking of marketing campaigns -Two Factor Authentication: a second layer of security with fallback through SMS, Voice, Viber & Missed Call -Cloud IVR: multilingual capabilities, turning speech into text, & text to human-sounding speech -Push Notification: personalized web & mobile push notifications, based on segmentation and userStarting Price: $0.01 one-time fee -
10
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 -
11
JumpCloud
JumpCloud
JumpCloud® delivers a unified open directory platform that makes it easy to securely manage identities, devices, and access across your organization. With JumpCloud, IT teams and MSPs enable users to work securely from anywhere and manage their Windows, Apple, Linux, and Android devices from a single platform. Everything in One Platform Grant users Secure, Frictionless Access™ to everything they need to do their work however they choose. Manage it all in one unified view. Cross-OS Device Management Manage Windows, macOS, Linux, iOS, iPad, and Android devices. One Identity for Everything Connect users to thousands of resources with one set of secure credentials. Comprehensive Security Enforce device policies, patches, MFA, and other security and compliance measures. Automated Workflows Connect to whatever resources you need, including Microsoft Active Directory, Google Workspace, HRIS platforms, and more.Starting Price: $9/user -
12
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. -
13
Silverfort
Silverfort
Silverfort’s Unified Identity Protection Platform is the first to consolidate security controls across corporate networks and cloud environments to block identity-based attacks. Using innovative agentless and proxyless technology, Silverfort seamlessly integrates with all existing IAM solutions (e.g., AD, RADIUS, Azure AD, Okta, Ping, AWS IAM), extending coverage to assets that could not previously have been protected, such as legacy applications, IT infrastructure, file systems, command-line tools, and machine-to-machine access. Our platform continuously monitors all access of users and service accounts across both cloud and on-premise environments, analyzes risk in real time, and enforces adaptive authentication and access policies. -
14
TrustBuilder
TrustBuilder
TrustBuilder is your reliable partner in cybersecurity. We go beyond the traditional software firm role, focusing on delivering robust and secure solutions that foster trust among enterprises. Through our Access Management Platform, TrustBuilder.io, our commitment is to ensure the secure digital journey of your employees, partners, and customers. With our advanced MFA and CIAM technology, we provide uninterrupted access while safeguarding identities. > TrustBuilder's SaaS MFA provides airtight, phishing-resistant security, passwordless experience, and seamless integration. > TrustBuilder's tailor made CIAM provides PBAC delivering fine grained authorization based on attributes with customisable workflows.Starting Price: € 10 per user / per year -
15
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 -
16
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 -
17
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 -
18
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 -
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Ping Identity
Ping Identity
Ping Identity builds identity security for the global enterprise with an intelligent identity platform that offers comprehensive capabilities including single sign-on (SSO), multi-factor authentication (MFA), directory, and more. Ping helps enterprises balance security and user experience for workforce, customer, and partner identity types with a variety of cloud deployment options including identity-as-a-service (IDaaS), containerized software, and more. Ping has solutions for both IT and developer teams. Enable digital collaboration with simple integrations to these popular tools. Support your employees wherever they are with integrations to these popular tools. Deploy quickly with interoperability across the entire identity ecosystem. Whether you just want single sign-on (SSO) or a risk-based, adaptive authentication authority, starting off with a PingOne solution package lets you only pay for what you need, and gives you room to grow.Starting Price: $5 per user per month -
20
Secret Double Octopus
Secret Double Octopus
Secret Double Octopus (SDO) provides a “best-in-class” enterprise passwordless MFA solution. In addition to market-leading completeness of features, SDO’s solution is differentiated by its patented automated password rotation approach and flexibility around enabling a “passwordless journey”. Organizations that are apprehensive about the move to passwordless, can progressively achieve Full Passwordless™ by beginning with traditional MFA on desktops or for remote worker use cases and eventually “flipping the switch” when they are ready. The company recently won AITE Novarica’s highest distinction in an evaluation of all major solutions, and has been designated a Gartner Cool Vendor.Starting Price: $3/month/user -
21
System Locker
System Locker
Control the access and distribution of your software product. With dozens of features, flexibility is maximized: you can create short term access keys, notify users when updates are available, view access logs and even give resellers the ability to purchase new keys without contacting you. Choose from registration-required or key-only authentication for each application. If key-only is your preference, your users will appreciate the speed. If you require users to register an account on System Locker, they can choose between verifying their email or verifying their Discord account. Our dedication to reliability remains strong, even as hundreds of new users join every day.Starting Price: $10/year -
22
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 -
23
Duende IdentityServer
Duende
IdentityServer is a flexible and standards-compliant OpenID Connect and OAuth 2.0 framework for ASP.NET Core, offering full control over UI, UX, business logic, and data. IdentityServer is officially certified by the OpenID Foundation and implements over a dozen protocols and standards from the OpenID Foundation and IETF working groups. It supports unlimited hosting options, allowing deployment on-premises, in the cloud, behind a VPN, on Windows, Linux, Docker, or Kubernetes. Duende Software also offers additional products such as IdentityServer for Redistribution and a Backend for Frontend (BFF) security framework. Comprehensive documentation and training resources are available to support developers in implementing these solutions. Being fully standards-compliant is very important to us, and we want to give you access to every aspect of the OAuth and OpenID Connect protocol family.Starting Price: $1,500 per year -
24
WSO2 Identity Server
WSO2
WSO2 Identity Server is API-driven, is based on open standards with the deployment options of on-premise, cloud or hybrid. It supports complex IAM requirements given its high extensibility. WSO2 Identity Server helps you do single sign-on and identity federation backed by strong and adaptive authentication, securely expose APIs, and manage identities by connecting to heterogeneous user stores. Leverage the power of open-source IAM in your enterprise to innovate fast and build secure Customer IAM (CIAM) solutions to provide an experience your users will love -
25
Regula
Regula
Regula is a global developer of forensic devices and identity verification solutions. With 30+ years of experience in forensic research and the largest library of document templates in the world, Regula creates breakthrough technologies in document and biometric verification. Regula hardware and software solutions allow over 1,000 organizations and 80 border control authorities globally to provide top-notch client service without compromising safety, security or speed. -
26
uqudo
uqudo
uqudo is MEA's leading digital identity platform, delivering end-to-end verification that safeguards every customer touchpoint. Our award-winning suite seamlessly integrates white-label KYC, KYB, AML Screening, Transaction Monitoring, and Biometric Authentication to embed trust into digital interactions. We empower enterprises and scaleups to accelerate digital transformation, slash operational costs, deliver frictionless user experiences, ensure regulatory compliance, and eliminate fraud. With proven expertise spanning Banking, Telecommunications, Fintech, Trading, and national identity programs, uqudo processes millions of verifications annually across the region. -
27
Allthenticator
Allthenticate
Allthenticator is a passwordless authentication platform designed to unify digital and physical access through a single smartphone-based identity. It enables proximity-based login to computers, websites, and servers, while also unlocking physical doors with the same device—eliminating passwords, tokens, and keycards. The platform supports SSH key signing, passkey logins, OTP management, and native integrations with identity providers like Azure AD and Okta. Admins manage everything from a centralized dashboard with role-based access and audit logs. Allthenticator also offers a decentralized credential recovery system, allowing users to back up identities with trusted peers instead of the cloud. Organizations using Allthenticator have reported 94% fewer password resets, 76% less time spent on access management, and up to 96% employee satisfactionStarting Price: $12/month/user -
28
IceWarp
IceWarp
The only office rule is, there is no office. Business email, TeamChat for project teamwork, real-time office document collaboration and online meetings. All in our secure cloud and for half the usual cost. Chat in teams organized around projects, upload files, mention coworkers, comment on posted emails, pin important posts. Integration with email enables sharing received messages directly to TeamChat room for colleagues‘ attention. Skyrocket your office work effectivity with Desktop Client and Desktop Office documents on Windows as well as Linux devices. Get the complete Suite, or choose only the app you need.Starting Price: $312.00/year/user -
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Teleport
Teleport
The Teleport Infrastructure Identity Platform modernizes identity, access, and policy for infrastructure, for both human and non-human identities, improving engineering velocity and resiliency of critical infrastructure against human factors and/or compromise. Teleport is purpose-built for infrastructure use cases and implements trusted computing at scale, with unified cryptographic identities for humans, machines and workloads, endpoints, infrastructure assets, and AI agents. Our identity-everywhere approach vertically integrates access management, zero trust networking, identity governance, and identity security into a single platform, eliminating overhead and operational silos. -
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NCP
NCP engineering
For individual workstations, freelancers or smaller installations, NCP Entry Clients offer a wide range of technical features and offer much more than a standard VPN. Our Solution Finder will help you find the right NCP product for your organization. No matter what hardware you use, whether you are looking for a solution for use in your own company or as a partner for your customers, for a few employees or large installations, we will guide you to the right product in just a few steps. With 30 years of experience in remote access environments, NCP is an excellent choice for a complete VPN solution that meets the needs of users, IT administrators and management. NCP’s remote access solutions are fully-automated, highly secure and cost efficient covering important benefits.