Best Authentication Software for Linux of 2025

FusionAuth offers a robust authentication solution that prioritizes flexibility, security, and ease of use for developers. It accommodates various authentication methods, including traditional username/password, passwordless options, multi-factor authentication (MFA), and social login integrations. With an API-first design, FusionAuth seamlessly integrates with any technology stack or architecture. It adheres to industry standards by supporting protocols like OAuth2, OIDC, and SAML, ensuring secure and compliant authentication processes. Whether you choose to deploy it on-premises, in the cloud, or in a hybrid setup, FusionAuth empowers you to manage the user login experience effectively while also aiding in compliance with regulations such as GDPR, HIPAA, and COPPA.

Sumsub is a comprehensive identity verification platform designed to enhance security throughout the entire user experience. Offering tailored solutions for KYC, KYB, AML, transaction monitoring, and fraud prevention, Sumsub allows businesses to streamline their verification processes, expand their customer base globally, adhere to compliance standards, lower expenses, and safeguard their operations. The platform boasts impressive conversion rates, achieving 91.64% in the United States, 95.86% in the United Kingdom, and 97.89% in Hong Kong, with user verification typically completed in under 50 seconds. Sumsub's approach aligns with FATF guidelines, which represent the global benchmarks for AML and CTF regulations, as well as meeting local compliance requirements from authorities such as FINMA, FCA, CySEC, MAS, and BaFin. Currently, Sumsub serves over 2,000 clients across various sectors including fintech, cryptocurrency, transportation, trading, e-commerce, and gaming, with notable partnerships including Bitpanda, Wirex, Avis, Bybit, Huobi, Kaizen Gaming, and TransferGo.

Protect your users. Make their journey easier. MIRACL Trust provides a safer and smoother authentication experience. Only one step. No passwords. No problem. Multi-factor authentication is slow and cumbersome. MIRACL is a safer and more efficient alternative to traditional MFA. Logging in takes only 2 seconds and error rates as low at 1/10th of passwords. No passwords necessary. All you need is a PIN and you are in. Our cryptographic technology ensures that users' information is always safe. MIRACL Trust provides a simple login experience that puts users first and makes it easy to roll out your data quickly.

Routee is an intelligent omnichannel communication platform. (CPaaS), Routee offers advanced Web and API automation for all industry sectors. Routee's services are powered by AMD Telecom's strong infrastructure. They enable businesses to optimize marketing and business processes. -SMS Marketing: Custom-made messages based upon customers' individual preferences -Email Marketing: personalized newsletters and email campaigns based upon audience behavioral data -Transactional email: automated emails to customers regarding important data about their transactions -Marketing Automation: Rich forms & customer data capture. Automate repetitive marketing tasks and track marketing campaigns. -Two factor authentication: A second layer of security that includes fallback via SMS, Voice, Viber, and Missed Call -Cloud IVR: Multilingual capabilities, including the ability to convert speech into text and text to human-sounding text -Push Notifications: personalized web and mobile push notifications based on segmentation.

LastPass is the leader in password and identity management solutions, trusted by individuals and organizations of all sizes worldwide. Millions rely on LastPass daily to create, store, manage, and protect their most important credentials, keeping them secure, private and always within reach. With LastPass, anyone can effortlessly log in to life or work anytime, anywhere.

Allow 2FA on your favorite sites. Protect yourself against hackers and account takeovers by going beyond the password. Simple to setup, secure cloud backup, multi device support. Protect your accounts from cyber criminals and avoid account takeovers by enabling 2FA. You can watch the video below to learn why 2FA should be enabled for your accounts. It is no longer safe to rely on usernames and passwords for online account security. Data breaches happen daily and hackers are constantly inventing new ways of taking over your accounts. Enable two-factor authentication (2FA) to protect yourself. This prevents anyone from using your stolen data. It verifies your identity via your device. To protect your online accounts, enable 2FA now

Cipherise for developers. All you need to create powerful and user-friendly authentication. Your users will have the best experience possible. Multi-Factor Authentication. MFA is simple and highly secure, which is almost invisible to end users. No complex passwords. No more complicated passwords, usernames, or credential sharing Omni Channel. The user experience is consistent regardless of whether it's on a mobile, tablet, laptop, or PC. Hackers are no longer able to access centralized credential Honeypots. Bi-Directional authentication. Before the user authenticates to it, the service authenticates to them. Mobile Native. Mobile Native. Protect your valuable IP and Content. We make it easy for your customers to sign up and access your content from any device.

LoginRadius allows businesses to provide a pleasant customer experience without compromising security. Companies can use our customer identity platform to offer a simplified login process, protect digital accounts, and comply with data privacy regulations. LoginRadius has over 3,000 users and 700 million monthly visitors worldwide. Registration services, adaptive security, integrations with third-party apps, and customer insights are some of the key platform features. Gartner, KuppingerCole and Computer Weekly have named the company an industry leader in customer identification and access management (CIAM). Microsoft is a major technology investor and partner. LoginRadius has its headquarters in Vancouver, Canada. There are additional offices in Toronto, USA and Australia. LoginRadius Services: API Authentication OAuth Data Management Secure Login One Sign On SAML SSO Sign up for social media Two Factor Authentication

Rublon allows your workforce to securely connect to your organization's servers, networks, and applications. Multi-factor authentication makes it easy to protect your data and comply with data protection regulations such as GDPR. Rublon can be deployed across your organization, enabling multi-factor authentication (MFA) for all cloud apps, VPNs servers, workstations, on-premise and internal apps.

Finally, a password manager that is designed for collaboration. Secure, flexible, and ready for automation. Trusted by over 10,000 organizations, including Fortune 500 companies and newspapers as well as governments and military forces. Passbolt servers have been designed to be easy to set up and manage. They are enterprise-ready and can be configured to support high availability. Passbolt is available via your browser or your mobile phone. Real-time sharing is possible. Desktop apps are on the horizon. The JSON API allows you to retrieve, store, and share passwords programmatically. Automate at scale using Passbolt CLI Access logs in real-time. Privacy is part of our DNA, and also in the DNA European laws (to ensure we don't change minds). Passbolt's self-hosted source code is covered by an AGPL license. Yes, even the commercial version. It is free to be audited, contributed to, and redistributed. This is why we have thousands of organizations from all sectors.

Small and medium-sized enterprises (SMEs) around the world can realize true freedom of choice by partnering with JumpCloud. JumpCloud centralizes the management and security of identities, access, and devices through its cloud-based open directory platform, enabling IT teams and managed service providers (MSPs) to remotely support Windows, Mac, Linux, and Android devices, manage identities natively or from their preferred HRIS or productivity suite, and provide access to hundreds of on-prem and cloud-based apps with a single, secure set of credentials. Start a 30 Day Trial of JumpCloud today to take advantage of the entire platform for free.

Identity Governance and Web Access Management You must ensure that new employees are granted access to all systems and resources necessary to their work. Access that is not necessary for the new position must also be revoked. It is essential that permissions are granted for users who leave the firm or are terminated. To avoid disgruntled users, access to sensitive data and applications must be disabled or removed promptly with traceability.

Silverfort's Unified Identity Protection Platform was the first to consolidate security controls across corporate networks to prevent identity-based attacks. Silverfort seamlessly integrates all existing IAM solutions (e.g. AD, RADIUS Azure AD, Okta. Ping, AWS IAM), providing protection for assets that cannot be protected previously. This includes legacy applications, IT infrastructure, file system, command-line tools and machine-tomachine access. Our platform continuously monitors access to users and service accounts in both cloud and on-premise environments. It analyzes risk in real-time and enforces adaptive authentication.

TrustBuilder is a European-based Access Management software vendor based in Europe, specializing in strengthening digital landscapes with identity-centric solutions. It's SaaS platform seamlessly integrates passwordless and deviceless Multifactor Authentication into a comprehensive Customer Identity and Access Management platform, combining airtight security with a frictionless user experience. Committed to enabling secure and efficient operations, TrustBuilder offers tailor-made solutions, empowering businesses to customize their cybersecurity defenses.

Aerobase is a publicly available Identity and Access Management (IAM) system that focuses on various aspects such as identity federation, single sign-on (SSO), robust and adaptive authentication methods, access management, account oversight, identity provisioning, as well as securing APIs and microservices in line with privacy regulations. This introductory guide is designed to assist you in setting up Aerobase, detailing server setup and the utilization of the default database. However, it does not delve into more advanced deployment methods. For additional insights into features or configuration settings, please refer to the supplementary reference materials available. Understanding these aspects will enhance your overall experience with Aerobase.

OpenOTP Security Suite is an enterprise-class security solution for two-factor authentication with U2F/OTP, federation and identity management (IAM). The solution combines mobile technologies with proven security standards to provide the best alternative for business and non-business users who need cost-effective solutions that support their users' mobility. It enables integration of a variety of third-party products and systems with MFA, even if they only support LDAP as an authentication backend. Try OpenOTP Security Suite if you are interested in: USER MOBILITY | PRIVACY | VPN AND WIFI SECURITY | SSO AND ADFS | FINE-GRAINED AUTHENTICATION POLICIES | ALL-IN-ONE SECURITY SOLUTIONS | EUROPEAN DATA STORAGE 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)

HYPR is The True Passwordless Company with cutting edge technology and backed up by major investment partners. The HYPR Cloud Platform allows Passwordless Authentication across an enterprise workforce. It combines the security and convenience of a smartcard with the convenience of a smartphone. With HYPR, businesses can eliminate customer passwords and provide a superior login experiences for your customers as well. Consumer-grade usability increases the productivity of your employees and reduces friction for your customers.

We offer the most user-friendly technology without sacrificing performance or features. We back it up with exceptional support and care delivered under a fair, cost-effective pricing model Our technology is used by small startups with big ideas, small budgets, and global enterprises. We love them all! Easy to use Load balancing, WAF, GSLB and SSO/Pre-Authentication. It is also the only true ADP Application Delivery Platform that allows for the enhancement of functionality and longevity using the app store or apps you create in-house.

Ping Identity provides global enterprise identity security with an intelligent identity platform. It offers comprehensive capabilities such as single sign-on (SSO), multifactor authentication (MFA), directory and many 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 offers solutions for both developers and IT teams. Allow digital collaboration through simple integrations to these popular tools. These integrations allow you to support your employees wherever they may be using these popular tools. You can deploy quickly and have interoperability throughout the entire identity ecosystem. You can choose to have a single sign-on (SSO), or an adaptive, risk-based authentication authority. A PingOne package allows you to only pay for what is necessary and allows you to grow.

SDO offers end-to-end workforce passwordless authentication and desktop MFA solutions for enterprise workforces. The Octopus Authentication Platform plugs into VPNs for more secure remote access, VDI and SSO portals such as Okta SSO, Ping Identity, Microsoft ADFS and ForgeRock. The solution can integrate into Okta Verify or ForgeRock MFA, as well as integrate with Cisco Duo or RSA SecureID. It is the most flexible and complete way to go passwordless in the market today. Password management tools become obsolete in a world where SDO eliminates the password, lowering help desk costs. As a FIDO2-certified server, Secret Double Octopus supports any FIDO2-certified key such as Yubico, Feitian and Google's Titan key. Secret Double Octopus is the perfect next generation authentication solution for Zero Trust network access and re-architecture initiatives.

You can control the distribution and access to your software product. You have many options to make your software product flexible. You can create short-term access keys, notify users when updates become available, view access logs, and even allow resellers to purchase new keys without having to contact you. Choose from registration-required or key-only authentication for each application. Your users will appreciate the speed if key-only authentication is what you prefer. Users can choose to verify their email address or their Discord account if they are required to register on System Locker. Our commitment to reliability is strong, even though hundreds of new users join every single day.

ZITADEL serves as an open-source platform for identity and access management, aiming to streamline the processes of authentication and authorization for various applications. It encompasses a robust array of features, including customizable login pages, compatibility with contemporary authentication techniques like Single Sign-On (SSO) and social logins, as well as the implementation of multifactor authentication to bolster security measures. Developers have the option to either integrate ZITADEL’s APIs into their applications for direct authentication or create specialized login interfaces tailored to their needs. Furthermore, the platform's role-based access control mechanism allows for meticulous permission management tailored to specific user roles, and its multi-tenant architecture makes it easy to extend applications to accommodate new organizations. ZITADEL's flexibility not only supports diverse workflows and user management processes but also adheres to brand guidelines, with features such as ZITADEL Actions enabling the execution of workflows triggered by specific events without necessitating further code deployments. As a result, ZITADEL is an adaptable solution for businesses looking to enhance their identity management strategies efficiently.

IdentityServer serves as a versatile and standards-adhering framework for OpenID Connect and OAuth 2.0 tailored for ASP.NET Core, ensuring complete control over user interface, user experience, business logic, and data management. It has received official certification from the OpenID Foundation and encompasses a wide array of protocols and standards developed by the OpenID Foundation and IETF working groups. Additionally, it presents limitless hosting possibilities, facilitating deployment on-premises, in cloud environments, behind VPNs, and on various platforms such as Windows, Linux, Docker, or Kubernetes. Duende Software enhances this offering with supplementary products, including IdentityServer for Redistribution and a Backend for Frontend (BFF) security framework. To assist developers in effectively utilizing these solutions, extensive documentation and training resources are readily accessible. Our commitment to being fully compliant with standards is paramount, and we strive to provide you with comprehensive access to all facets of the OAuth and OpenID Connect protocol family. Furthermore, this approach empowers organizations to implement secure authentication and authorization processes tailored to their specific needs.

WSO2 Identity Server API-driven is built on open standards and offers the option of cloud, hybrid, or on-premise deployments. It is highly extensible and can support complex IAM requirements. WSO2 Identity Server allows you to do single sign-on as well as identity federation. It is backed up by strong and adaptive authentication. Securely expose APIs and manage identities by connecting with heterogeneous user accounts. Open-source IAM can be used to innovate quickly and to build secure Customer IAM solutions (CIAM) to deliver a user-friendly experience.

Regula is a global manufacturer of forensic devices as well as identity verification solutions. Regula has over 30 years of experience in forensic investigation and the largest collection of document templates anywhere in the world. This allows Regula to create breakthrough technologies in document verification and biometric verification. Regula software and hardware solutions enable over 1,000 organizations and 80 border control authorities worldwide to provide top-notch customer service without compromising safety security and speed.