Compare the Top Authentication Software for Linux as of February 2026

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.

  • 1
    Sumsub

    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
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  • 2
    MIRACL

    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.
  • 3
    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.
  • 4
    Cipherise

    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
  • 5
    TrustBuilder

    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
  • 6
    Secret Double Octopus

    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
  • 7
    System Locker

    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
  • 8
    IceWarp

    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
  • 9
    EnSecure

    EnSecure

    Enqura

    Strong multi-factor customer authentication designed for secure first time log-in, transaction signing, document verification protecting digital channels against fraud. Digital Identity, created by using multi-factor authentication is crucial for enhancing user experience, guaranteeing the protection of your customers’ assets, and adhering to regulatory requirements. EnSecure offers the ideal solution for end users’ authentication needs across many industries, with two versions based on Soft OTP and Electronic Certificate.
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