List of the Top 25 Free Authentication Software in 2025

Kinde is auth for modern applications. Our powerful user authentication integrates in minutes and is free up to 10,500 MAU. Kinde was created by founders and engineers to help businesses generate more revenue, reduce costs and make lifelong loyal customers – in one place. Every day, Kinde gives our community of founders and partners across the globe, the infrastructure they need to build anything they can imagine. Every aspect of Kinde is designed to help your business grow and scale. From startup to IPO in a single platform. Social login with all of your customers favourite SSO providers, and passwordless auth to take the friction out of passwords. And when you’re ready to scale, enterprise connections, custom SAML and MFA, take the friction out of building beautiful, ultra-secure, high conversion onboarding experiences.

Enhance the security of your workforce with robust and user-friendly access solutions from Cisco Duo. Our cutting-edge access security framework is meticulously crafted to safeguard every user, device, and application, allowing you to concentrate on your core activities. Enjoy secure access for all users and devices across various environments and locations, ensuring peace of mind through complete device visibility and trust. This SaaS solution seamlessly protects all applications while being straightforward to deploy, scalable, and responsive to emerging threats. Duo's access security is essential for shielding applications from compromised credentials and devices, offering extensive coverage that aids in fulfilling compliance mandates. By integrating smoothly with applications, Duo delivers flexible, user-centric security that is easy to implement and administer. For administrators, users, and IT teams alike, this is a practical solution that benefits everyone involved. Essential features such as multi-factor authentication, dynamic device trust, adaptive authentication, and secure single sign-on play vital roles in your journey towards a zero-trust framework. Each of these components contributes to a comprehensive security strategy that evolves with your organization's needs.

Auth0 adopts a contemporary method for managing identity, allowing organizations to ensure secure access to applications for all users. It offers a high degree of customization while remaining both straightforward and adaptable. Handling billions of login transactions every month, Auth0 prioritizes convenience, privacy, and security, enabling customers to concentrate on their innovative efforts. Furthermore, Auth0 facilitates quick integration of authentication and authorization processes across web, mobile, and legacy applications, featuring advanced Fine Grained Authorization (FGA) that expands the capabilities of traditional role-based access control, thereby enhancing security measures overall.

Plaid operates as a global data network that supports various tools that help countless individuals achieve better financial well-being. Our goal is to create a financial ecosystem that is inclusive, competitive, and advantageous for all by streamlining payment processes and transforming the lending landscape. Collaborating with over 8,000 businesses, including popular fintech platforms like Venmo and SoFi, as well as numerous Fortune 500 firms, Plaid empowers users to have greater autonomy and flexibility in managing their finances. Based in San Francisco, the company's network encompasses more than 12,000 institutions across the United States, Canada, the United Kingdom, and Europe, ensuring a wide reach and impact in the financial sector. Additionally, Plaid is dedicated to fostering innovation that enhances user experiences in financial transactions.

Veriam revolutionizes the way authentication is handled by merging identity management, access control, and subscription management into a cohesive and secure platform. In contrast to conventional authentication solutions, Veriam's all-in-one platform minimizes administrative burdens, reduces the number of tools required, and enhances the overall experience for both users and service providers. With Veriam, users can log in just once to access products, subscriptions, and data from any organization utilizing the platform—boosting security and streamlining the login process. Highlighted Features: ✔️ Single Sign-On (SSO): Enjoy secure and versatile logins via Google, Microsoft, or email. ✔️ Role-Based Access Control: Tailor access permissions and roles based on individual user requirements. ✔️ User Invitations & Onboarding: Seamlessly integrate new users into appropriate teams through automated email invitations. ✔️ Profile & Data Management: Users have the ability to manage their profiles, access permissions, and data settings. ✔️ Security & Compliance: Veriam adheres to industry regulations, ensuring that data remains protected and confidential. Experience the benefits of Veriam today!

Ensure the security of your users while simplifying their experience. MIRACL Trust delivers a streamlined and secure authentication process that requires just one step, eliminating the hassle of passwords entirely. Traditional multi-factor authentication can be tedious and slow; however, MIRACL offers a faster and more secure alternative. Users can log in in just 2 seconds, with error rates significantly lower than those associated with passwords—down to one-tenth. Instead of passwords, a simple PIN is all that's needed for access. Our advanced cryptographic technology guarantees that users' data remains protected at all times. By prioritizing user experience, MIRACL Trust allows for a straightforward login process and facilitates rapid deployment of your data. With MIRACL, safeguarding your users has never been easier or more efficient.

You can utilize the advantages of biometric technology to streamline the authentication process for any website or application. This innovation enables the development of a novel approach to online login and verification. Leveraging smartphones, you can implement two-factor and passwordless authentication for user verification. Auth Armor ensures secure access for every individual without the need for weak passwords or complex codes. We have designed robust APIs, SDKs, and libraries that empower you to customize your authentication solutions to fit your specific needs. Our tools can be integrated to enhance authentication in any application using a variety of workflows. We deliver comprehensive security for both employees and customers, providing the flexibility and control necessary to safeguard sensitive information. Auth Armor stands out as the most effective mobile authentication system on the market. Additionally, our instant push messaging feature allows users to log in and authenticate with remarkable speed and ease. This seamless experience enhances user satisfaction and encourages higher engagement.

With passwordless proximity login, users can access desktop applications, websites, and devices like Macs and PCs seamlessly. The technology utilizes active proximity detection for hands-free wireless two-factor authentication and efficient password management. IT administrators gain the ability to let users log into their systems dynamically using a physical key, which can be activated automatically, manually through touch, by pressing Enter, or with a PIN code. This means users can effortlessly log in, switch accounts, change devices, and log out without ever needing to remember or input passwords; all that is required is the key. Moreover, when a user steps away, the system automatically locks, safeguarding access to the computer and web passwords. Continuous authentication methods ensure that users' access is routinely verified. Consequently, the hassle of typing passwords is eliminated entirely. Furthermore, administrators can streamline password protection through a centralized admin console, enabling the enforcement of stronger passwords and two-factor authentication while allowing employees to maintain their productivity without interruptions. This innovation significantly reduces helpdesk inquiries related to forgotten passwords and password resets, making the login process and autolocking dependent on proximity more efficient and user-friendly. This advancement not only enhances security but also improves the overall user experience in workplace environments.

Google Authenticator generates 2-Step Verification codes right on your mobile device, adding an important layer of security to your Google Account by requiring a second verification step when you log in. In addition to entering your password, you will also need a code produced by the Google Authenticator app on your phone. This setup allows you to securely and conveniently access a wide range of websites and services through your Google Account, all while keeping your privacy preferences within your control. To further enhance the security of your account, take advantage of the Security Checkup tool, which provides tailored guidance and practical steps to strengthen your account's defenses. It is essential to be aware that compromised passwords are more common than many people realize. The implementation of two-step verification acts as a strong safeguard against unauthorized access by requiring an extra verification step following your password entry, thus greatly improving your account's overall security. By employing this method, you can enjoy a heightened sense of security, knowing that your personal information is better shielded from potential threats. Ultimately, taking these precautions not only protects your data but also gives you confidence while navigating online.

LastPass stands out as a premier provider of password and identity management tools, gaining the trust of both individuals and enterprises across the globe. Each day, millions depend on LastPass to generate, save, oversee, and safeguard their vital credentials, ensuring they remain secure, confidential, and consistently accessible. Thanks to LastPass, users can seamlessly access their personal and professional accounts from any location, at any time, enhancing convenience in their daily lives. This level of accessibility helps users manage their online presence with confidence and ease.

Experience a seamless sign-in process without the need for passwords by simply entering your username and confirming your identity via your mobile device—it's that easy! Unlike traditional passwords, which can be forgotten or compromised, the Authenticator app provides an extra layer of security with your PIN or fingerprint. This reliable tool allows you to access various services, including Outlook, OneDrive, and Office, effortlessly. Protect your accounts effectively by using two-step verification for enhanced security. Additionally, the app fortifies your online safety by generating time-based one-time password (OTP) codes, ensuring comprehensive protection for your accounts. With these advanced features, you can navigate the digital landscape confidently and securely, all while eliminating the stress of managing complex passwords. Enjoy the freedom of a password-free lifestyle, making your online interactions not only simpler but also more secure than ever before.

FusionAuth was designed with a foundational goal of seamless integration across various applications and programming languages. Every single feature is accessible through an API, providing unparalleled flexibility to address a wide range of scenarios. It encompasses all essential functionalities and standards, including registration and login processes, passwordless authentication, multi-factor authentication (MFA), as well as SAML and OIDC support. Moreover, achieving compliance with regulations such as GDPR, HIPAA, and COPPA can be accomplished within moments. You can deploy FusionAuth on any computing environment, whether it’s a personal computer or a server. Additionally, our managed service, FusionAuth Cloud, offers a hassle-free hosting alternative, empowering users to take full control of their authentication infrastructure. With such versatility, organizations can customize their identity management solutions to fit their specific needs.

Protectimus offers a cloud-based two-factor authentication service that is available around the clock, allowing users to register and initiate integration through either an API or a pre-built plugin. For those who prefer an on-premises solution, Protectimus also provides a multi-factor authentication platform that can be deployed at your location or within a private cloud environment. This service seamlessly integrates with various systems such as Radius, Citrix NetScaler, XenApp, VMware, Active Directory, LDAP, and Windows Logon, alongside support for OWA, RoundCube, dynamic passwords, API, SDK, and tailored development. The dynamic strong password authentication feature connects directly to Microsoft Active Directory or any user directory, enhancing user security by adding six-digit passwords to their existing static passwords. With the frequency of data breaches on the rise, implementing robust authentication methods is vital for safeguarding sensitive information. It’s crucial to acknowledge that personal data can become exposed without proper security measures in place. In a business setting, limiting user authentication to merely a single password is not sufficient; a more comprehensive approach is required to bolster security and protect valuable assets.

Frontegg serves as a powerful development platform that facilitates self-service, security, and enterprise functionalities through an intuitive user management interface, thus enhancing creativity and enabling unique differentiators. Beyond offering basic authentication and single sign-on via an integrated login box, Frontegg provides an Admin Portal designed to function as the centralized Settings area for users. This Admin Portal empowers users to oversee every facet of their accounts, including the ability to assign roles and permissions to individuals and teams, establish new roles, monitor audit logs, subscribe to webhooks, and much more. Moreover, Frontegg’s interfaces can seamlessly integrate into your application, acting as a customer-facing management interface suitable for personal and workspace levels alike. Additionally, Frontegg enhances your backend capabilities with comprehensive SDKs that support a variety of programming languages and frameworks, ensuring robust integration and functionality across different platforms. This versatility positions Frontegg as an essential tool for developers seeking to elevate their applications with sophisticated user management features.

Integrate Authsignal into your identity framework to enhance customer journeys and provide top-tier user authentication experiences. Designed to empower product and fraud teams in managing customer pathways while reducing fraud risk, Authsignal simplifies the deployment of passkeys. Offering exceptional, easy-to-integrate authentication solutions, product teams can utilize Authsignal to implement authentication methods like Passkeys, push notifications, and SMS challenges throughout the user experience. This facilitates seamless identity verification, ensuring not only secure customer journeys but also safeguarding user data with a cohesive customer experience. With Authsignal, you can obtain a comprehensive view of customer interactions and effectively manage identity data along with detailed audit trails. Ultimately, this powerful tool supports a variety of authentication methods, including passwordless, multifactor, and CIAM solutions, to meet diverse security needs.

Rublon provides a secure means for your employees to access your organization's servers, networks, and applications. By implementing multi-factor authentication, it simplifies the process of safeguarding your information and adhering to data protection laws like GDPR. Moreover, Rublon can be integrated throughout your organization, facilitating multi-factor authentication (MFA) for a wide range of platforms, including cloud applications, VPNs, servers, workstations, and both on-premise and internal applications. This comprehensive deployment ensures enhanced security across all facets of your digital infrastructure.

It simplifies access for both employees and students to the applications necessary for their learning or work tasks. The ability for users to reset their passwords independently minimizes reliance on IT support. Additionally, it enhances cybersecurity measures by safeguarding user accounts from potential hacking attempts and defending against ransomware and phishing attacks. This overall approach not only streamlines processes but also instills greater confidence in the digital security framework.

Introducing a password manager specifically crafted for collaborative efforts—secure, adaptable, and poised for automation. With the trust of over 10,000 organizations, including Fortune 500 companies, media outlets, government agencies, and military units, Passbolt's servers are built for straightforward setup and management. Designed for enterprise readiness, these servers can be configured to ensure high availability. Users can access Passbolt through their web browsers or mobile devices, with real-time sharing capabilities already in place, and desktop applications expected soon. The JSON API facilitates programmatic retrieval, storage, and sharing of passwords, allowing for large-scale automation via the Passbolt CLI. Real-time access logs enhance monitoring and security. Our commitment to privacy is intrinsic to our operations, aligned with European laws to uphold our principles. The self-hosted source code of Passbolt is protected under an AGPL license, which applies even to the commercial edition, allowing for audit, contributions, and redistribution. This foundational transparency is why countless organizations across diverse sectors choose Passbolt as their password management solution. Ultimately, the collaborative features and robust security measures position Passbolt as a leader in password management for organizations of all sizes.

Safeguard vital organizational information and improve employee productivity through OneLogin, a dependable identity and access management (IAM) platform designed specifically for modern enterprises. This solution is engineered to enhance security within organizations while simplifying the login experience, making it a perfect fit for businesses looking to adopt security protocols with ease. OneLogin offers an array of highly-rated features, such as single sign-on (SSO), a centralized user directory, user provisioning, adaptive authentication, mobile identity management, compliance reporting, and more. Utilizing these capabilities, organizations can achieve a balance of security and user accessibility. As the landscape of digital security continues to evolve, OneLogin emerges as a robust solution to address the growing demands and challenges faced by companies today. Furthermore, its user-friendly interface and comprehensive support further solidify its position as an essential tool for businesses striving for both protection and efficiency.

Identity Governance and Web Access Management require that new hires are provided with the appropriate access to all essential systems and resources relevant to their roles. Additionally, any access not pertinent to their new position should be promptly rescinded. It is crucial to revoke permissions for individuals who depart from the organization or who are let go. To prevent issues with disgruntled former employees, it is vital that access to sensitive information and applications is swiftly disabled or revoked, ensuring a system of traceability is in place to monitor these actions effectively. Timely management of access rights is key to maintaining security and safeguarding organizational assets.

Cyphercor provides a top-notch two-factor authentication solution known as "LoginTC," which is designed to be user-friendly, efficient, and affordable. This robust system enhances the security of various applications and systems, including VPNs, firewalls, remote desktop access, and active directory. With LoginTC, end-users can choose from a diverse array of two-factor authentication methods such as SMS, email, push notifications, hardware tokens, U2F, OTP, and bypass codes, ensuring flexibility and convenience. Additionally, utilizing LoginTC can assist organizations in minimizing their insurance expenses while effortlessly adhering to compliance standards. By implementing such an advanced security measure, businesses can also foster greater trust with their clients.

The OpenOTP Security Suite is a robust enterprise-level solution tailored for two-factor authentication through U2F/OTP, along with federation and identity management (IAM). This innovative system merges mobile technology with established security protocols, making it an excellent choice for both commercial and personal users seeking economical solutions that enhance user mobility. It also supports the integration of various third-party products and systems with multi-factor authentication (MFA), even when they solely rely on LDAP for authentication. If you are exploring options in user mobility, privacy, VPN and Wi-Fi security, single sign-on (SSO) and ADFS, fine-grained authentication policies, comprehensive security solutions, or European data storage, OpenOTP Security Suite could be the perfect fit for your needs. Additionally, it is designed for deployment either on-premises or within a private cloud environment, catering to various organizational requirements. The suite also offers a free token application compatible with most existing hardware and software tokens, a complimentary 30-day trial, and is available as freeware for organizations with fewer than 25 users.

HYPR is recognized as the leading company in passwordless technology, supported by significant investment partners. The HYPR Cloud Platform facilitates Passwordless Authentication for an entire workforce, merging the security of a smartcard with the ease of smartphone access. By adopting HYPR's solutions, organizations can remove the need for customer passwords, resulting in an enhanced login experience for clients. This consumer-friendly approach not only boosts employee productivity but also minimizes obstacles for customers, leading to a more efficient overall experience.

Ensuring password security within Active Directory can prove to be a daunting task, yet it can be simplified effectively. Enzoic offers a solution that provides continuous, automated protection, functioning unobtrusively in the background. Tailored for IT professionals, it enhances security measures without introducing needless complications. - Continuous Monitoring: Passwords and credentials enjoy round-the-clock security—no manual intervention needed. - Instant Breach Protection: Daily updates preemptively block compromised passwords, averting potential risks. - All-Encompassing Defense: Safeguards not only passwords but entire credential sets, minimizing vulnerabilities across the board. - Eliminate Weak Passwords: Disallows common choices like "Password123" and encourages users to select stronger alternatives. - Streamlined Compliance: Automatically align with NIST 800-63B standards thanks to integrated protections and policies. - Intuitive User Tools: An optional Windows client offers immediate feedback to users, lightening the load on IT departments. State-of-the-Art Threat Intelligence: With billions of compromised passwords refreshed daily, Enzoic shields your systems against both new and previously known breaches. Engineered for IT, Crafted for Usability: Enzoic integrates effortlessly into your infrastructure, removing insecure passwords and bolstering overall security effectiveness. This ensures that organizations can focus on their core functions while maintaining a robust security posture.

LoginID offers SDKs and APIs that facilitate the seamless integration of our FIDO/FIDO2-certified multi-factor authentication solution into websites and applications. Our platform utilizes the inherent biometrics found on users' devices to generate a secure private/public key pair, ensuring robust customer authentication without the need for users to download any extra applications, as the private key remains securely stored on their device. Additionally, LoginID's transaction confirmation service enhances security for online merchants by requiring a biometric action for each transaction, which is then secured through cryptographic signing. We comply with various regulatory frameworks, including PSD2, GDPR, CCPA, and HIPAA, ensuring that our solution meets industry standards. Furthermore, LoginID supports a wide range of platforms with SDKs available for iOS, Android, React-Native, Web, Python, Java, and Node, alongside a convenient WordPress Plugin to cater to diverse development needs. Our commitment to secure authentication not only protects user data but also fosters trust between customers and businesses.