Best Authentication Software for Linux

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.

Sumsub provides secure, AI-powered authentication as part of a single platform that unifies identity verification, fraud prevention, and ongoing monitoring. Instead of stitching together separate authentication tools, businesses get continuous trust signals that carry through the entire customer lifecycle, reducing friction while keeping bad actors out. Powered by Summy AI and MCP connectivity, teams can build and adjust authentication workflows quickly as risk levels or user segments change, without adding headcount. This makes Sumsub suited for regulated industries such as financial services, crypto, and mobility operating across 220+ countries and territories. Recognized as a Leader by Gartner, Forrester, IDC, Liminal, and KuppingerCole, Sumsub is trusted by more than 4,000 clients, including Vodafone, Duolingo, and Avis, to authenticate users securely at scale.

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.

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.

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.

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.

Regula is a global software and hardware manufacturer focused on the verification of identity documents, banknotes, and securities. Regula’s software product suite includes ID verification, facematching and liveness technologies for mobile applications and web-based solutions, to build a seamless on-premises digital identity and biometric verification workflow. We give our clients and partners the opportunity to perform identity verification with the ultimate level of security, efficiency & customer experience. Regula clients portfolio consists of 500 organisations from Banking, Fintech, Telecom, Aviation, Insurance industries, more than 50 largest KYC providers and 132 border authorities. We produce high-quality products in order to automate all processes related to identity verification and document examination.

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.

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.

Protect your company, employees, and customers with simpler and stronger authentication. Deploy 2FA in minutes, not weeks. 2FA (and other user access security policies) built into the fabric of the infrastructure, not rigidly fixed to the applications. Enabling the use of any 2FA methods available on the market now and in the future without changing the core. Protection is available across the entire organization, spanning from on-premise, public and private cloud. Secfense is deployed in between your users and the applications they access. It learns the traffic patterns related to authentication. It can then enforce multi-factor authentication login and other sensitive actions without interfering with the applications existing code or database. Up-to-date 2FA methods are always available on the platform. Application changes don’t affect Secfense and applied methods. Take control over session expiration rules across all apps. Don’t rely on VPNs, base trust on users and their devices.

The most complete solution for digital onboarding, authentication and security formed by different biometrics and antifraud systems of FacePhi, offered with the best user experience in the market. A combination of biometric and other security systems that creates a complete digital onboarding and identity authentication solution that allows to access, verify and operate different services and products in mobile and web applications. A framework with an easy integration that allows our client to choose which components to activate providing a better and seamless experience for the end user. Face recognition allows us to determine the identity of a person by analyzing the face. Unlike other types of biometry like iris or fingerprint, face recognition is non-intrusive; it does not require cooperation from the user. It just needs to capture the face of the person with a web cam.