An open-source, standards-compliant, and flexible OpenID Connect and OAuth 2.0 framework for ASP.NET Core.
Cost / License
- Freemium
- Open Source
Platforms
- Self-Hosted
- .NET Framework




Ory is described as 'Builds cloud-native authentication (login), authorization (permission), delegation (OAuth2, OpenID Connect), and user management software. You can deploy what you need yourself or use the Ory Network and get started in minutes' and is a identity management tool in the security & privacy category. There are more than 50 alternatives to Ory for a variety of platforms, including Web-based, Self-Hosted, SaaS, Linux and Windows apps. The best Ory alternative is VoidAuth, which is both free and Open Source. Other great apps like Ory are Keycloak, authentik, ZITADEL and AuthKit.
An open-source, standards-compliant, and flexible OpenID Connect and OAuth 2.0 framework for ASP.NET Core.




OpenID Connect / OAuth 2 server for single sign-on, identity provision and federation, and securing web APIs with access tokens. Supports profiles for fintech applications, eHealth, eGovernment and others.
OpenIddict aims at providing a versatile solution to implement an OpenID Connect server and token validation in any ASP.NET Core.
A no-code CIAM, reimagined for collaboration. It empowers developers, marketing, and operations to work together on the customer identity experience, resulting in faster innovation and user journeys.



Community-developed identity management system with a flexible data model, multiple extension points and scripting support. Can manage a wide range of systems through the Identity Connector Framework.

Cerbos helps teams separate their authorization process from their core application code, making their authorization system more scalable, more secure and easier to change as the application evolves.


Userfront makes it easy to add authentication, access control, SSO, and multi-tenancy to any web application.



Everything you need to launch faster, in one platform. Powerful infrastructure for auth, user management, feature flags and billing. We’re reinventing the way software companies get started, so you can focus on what really matters, building your core product.




CentralAuth is an authentication service that provides user login functionality for web applications. The platform implements security protocols and authentication flows, allowing development teams to integrate user authentication without building these systems internally.

Tesseral is the only open source auth provider focused exclusively on serving B2B SaaS. With just a few simple lines of code, any developer can launch an elegant login page with support for common authentication factors like passwords, magic links, and social login (e.g.

Authpack provides a complete user and team management API and Dashboard installed with just 8 lines of code and featuring a built-in API explorer for developers to easily perform complex GraphQL operations on data from inside the app.



Auth.js is a runtime agnostic library based on standard Web APIs that integrates deeply with multiple modern JavaScript frameworks to provide an authentication experience that’s simple to get started with, easy to extend, and always private and secure!