IdentityServer icon
IdentityServer icon

IdentityServer

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An open-source, standards-compliant, and flexible OpenID Connect and OAuth 2.0 framework for ASP.NET Core.

IdentityServer screenshot 1

License model

  • Freemium • Open Source

Platforms

  • Self-Hosted
  • .NET Framework
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IdentityServer information

  • Developed by

    Unknown

  • Licensing

    Open Source and Freemium product.

  • Pricing

    One time purchase (perpetual license) that costs $0 + free version with limited functionality.

  • Written in

  • Alternatives

    17 alternatives listed

  • Supported Languages

    • English

GitHub repository

  •  1,549 Stars
  •  381 Forks
  •  16 Open Issues
  •   Updated Jun 14, 2025 
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IdentityServer was added to AlternativeTo by DzmitryLahoda on Dec 22, 2020 and this page was last updated Mar 28, 2023.
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What is IdentityServer?

An open-source, standards-compliant, and flexible OpenID Connect and OAuth 2.0 framework for ASP.NET Core.

  • Single sign-on for for applications
  • Supports applications developed for the web, mobile, desktops, devices, and more.
  • State of the art API and microservice access control
  • Full support for the OAuth 2.x protocol family for securing your resources.
  • True to open standards and OpenID Connect certified
  • Implements over a dozen protocols and standards from the OpenID Foundation and IETF working groups.
  • Ready for the highest security requirements
  • Full support for MTLS, proof of possession, resource indicators, JWT secured requests, and asymmetric authentication.
  • Integrates with a multitude of authentication protocols and providers
  • OpenID Connect, SAML2P, WS-Federation, Active Directory, and social providers.
  • The DSL and configuration system in C#
  • Utilize everything that can be done using C#. Implement any business logic, connect to any data source.
  • Full control over your UI and UX
  • Use your favorite UI framework to design a completely custom and unique user experience.
  • Hosted by any operating system or cloud service

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