List of the Top 7 Authentication Software for OAuth in 2025

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.

Auth.js is a robust open-source library designed for authentication that seamlessly integrates with modern JavaScript frameworks, providing a secure and flexible solution for managing user access. It supports a wide array of authentication methods, including OAuth for services like Google and GitHub, user credentials, and WebAuthn, allowing developers to choose the most suitable approach for their specific applications. Its adaptability extends across several frameworks such as Next.js, SvelteKit, Express, Qwik, and SolidStart, making it easy to implement authentication features on various platforms. Additionally, Auth.js is equipped with built-in support for popular databases like Prisma, Drizzle ORM, Supabase, Firebase, and TypeORM, which simplifies the management of user data significantly. To bolster security, it employs mechanisms such as signed cookies, CSRF token protection, and encrypted JSON Web Tokens (JWTs), all aimed at effectively safeguarding user information. Furthermore, Auth.js is engineered for high performance in serverless environments and comes with comprehensive documentation and practical examples that facilitate a smooth onboarding process for developers. This library not only streamlines the authentication process but also guarantees that applications maintain both security and a user-friendly experience, ultimately enhancing the overall functionality of web applications. In an era where security and usability are paramount, Auth.js stands out as a reliable choice for developers seeking to implement authentication solutions.

IdentityServer is a flexible framework that adheres to industry standards for OpenID Connect and OAuth 2.0, specifically designed for ASP.NET Core, which enables complete oversight of the user interface, overall user experience, business logic, and data management practices. It has been officially certified by the OpenID Foundation, featuring a comprehensive range of protocols and standards established by both the OpenID Foundation and IETF working groups. The framework supports a multitude of hosting options, making it suitable for deployment on-premises, in cloud settings, behind VPNs, and across various platforms including Windows, Linux, Docker, and Kubernetes. Additionally, Duende Software enriches this offering with complementary products like IdentityServer for Redistribution and a Backend for Frontend (BFF) security framework. To ensure developers can effectively leverage these tools, a wealth of documentation and training materials is readily available. Our dedication to maintaining full compliance with relevant standards is a fundamental priority, allowing us to offer extensive access to all components of the OAuth and OpenID Connect protocol family. Moreover, this comprehensive approach equips organizations with the ability to establish secure authentication and authorization mechanisms tailored to their unique requirements, fostering an environment of trust and security. Therefore, IdentityServer not only simplifies the implementation of authentication protocols but also enhances overall operational efficiency for businesses.

Introducing a revolutionary identity and access control API that fills a crucial void in web-scale solutions. Enhance your security and improve user experience by tenfold today. Leverage the Ory Network to develop secure applications that can engage new customers across every corner of the globe while delivering unparalleled login experiences. Recognizing that login involves far more than merely entering a username and password, Ory eliminates the risks and challenges associated with creating these systems from the ground up. Its API-first microservice architecture facilitates seamless integration at any project phase, allowing you to pay based on actual usage rather than features. Subscription packages from Ory offer sophisticated multi-factor authentication options, alongside advanced permissions, SSO, OAuth2, OIDC multi-tenancy, and much more. Built for high performance and scalability, Ory operates effectively on any cloud platform. Developers are at the heart of Ory's design, enabling you to swiftly customize your user experience and seamlessly integrate it within your existing software stack. With a commitment to open standards, Ory also simplifies the migration process from legacy systems through its automated data import features, ensuring a smooth transition. Embrace the future of login technology with Ory and experience a transformation in how users interact with your applications.

AgentAuth is a sophisticated authentication platform designed to facilitate secure and seamless access for AI agents to over 250 various third-party applications and services. Its compatibility with a wide array of authentication protocols ensures reliable connections along with automatic token renewal features. This solution integrates effortlessly with leading agentic frameworks such as LangChain, CrewAI, and LlamaIndex, thus enhancing the capabilities of AI agents significantly. Additionally, AgentAuth boasts a centralized dashboard that provides complete visibility into user-connected accounts, which supports effective monitoring and quick resolution of any issues that may arise. The platform also offers customizable white-labeling options, empowering businesses to modify the authentication experience to align with their brand identity and OAuth developer applications. With a strong focus on security excellence, AgentAuth complies with SOC 2 Type II and GDPR standards, employing advanced encryption techniques to protect data integrity. Moreover, its intuitive interface streamlines the management of authentication processes, rendering it user-friendly for a wide variety of users, from tech-savvy individuals to those less familiar with such technologies. This comprehensive approach positions AgentAuth as a leading choice for organizations seeking reliable authentication solutions.

Curity's identity server serves as a comprehensive platform for identity and API security that adheres to established standards, aimed at delivering strong authentication and authorization for various digital services. By integrating identity security with API security, it facilitates efficient customer identity and access management, thereby promoting digital transformation, fostering growth, and enhancing customer loyalty. The platform boasts an array of features, such as multi-factor authentication, user journey orchestration, decentralized identity, and secure access management. It is compatible with several identity-related standards, including OAuth, OpenID Connect, and SCIM, which helps ensure both interoperability and adherence to industry norms. The architecture of Curity is grounded in the principle of separating concerns, which significantly improves security, flexibility, and scalability. Additionally, it offers sophisticated configuration management capabilities, allowing for transaction-based changes, rollbacks, and backups, all of which can be managed through a user-friendly web interface, command-line interface, RESTCONF API, and XML configuration files. With these diverse tools and features, the Curity identity server stands out as a vital solution for organizations looking to enhance their digital security landscape.

Develop applications that are both secure and remarkably fast, improving your development workflow significantly. Leverage an economical low-code platform for quick deployment, while ensuring that you retain control over user data within your preferred database. Simplify user authentication with a variety of authentication templates and manage access according to your business's specific roles. Take advantage of APIs that seamlessly integrate with OAuth2 and OpenID, making the tasks of authentication and authorization more straightforward than ever. With convenient one-click deployment options, you can quickly launch a production-ready Authorizer instance. Access this instance's endpoint directly via your web browser and register as an administrator using a secure password to ensure safety. Setting up environment variables through the dashboard is straightforward, and the Authorizer object can be instantiated easily with a JSON object for user convenience. Enjoy the seamless integration of Authorizer right from the start, offering an exceptional digital experience in just three minutes. Our mission is to allow you to concentrate on your core business goals while crafting impactful solutions. Experience hassle-free authentication with top-tier services integrated, complemented by secure session management using HTTP-only cookies. Additionally, the incorporation of the Authorization Code flow facilitates mobile-based authentication, providing robust security across various platforms. This methodology not only refines your workflow but also significantly boosts user satisfaction by enhancing the authentication experience, making it truly effortless. As you implement these strategies, you will find your development process more efficient, leaving you with ample time to innovate and grow your business.