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https://github.com/IdentityServer/IdentityServer4

OpenID Connect and OAuth 2.0 Framework for ASP.NET Core
https://github.com/IdentityServer/IdentityServer4

aspnet-core dotnet identity identityserver4 oauth2 openid-connect security

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OpenID Connect and OAuth 2.0 Framework for ASP.NET Core

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README 

        
# Important update

This project is not maintained anymore. This repo will be archived when .NET Core 3.1 end of support is reached (13th Dec 2022). All new development is happening in the new [Duende Software](https://github.com/duendesoftware) organization. 



See [here](https://duendesoftware.com/products/identityserver) for more details.



## About IdentityServer4

[](https://dotnetfoundation.org/projects?searchquery=IdentityServer&type=project)



IdentityServer is a free, open source [OpenID Connect](http://openid.net/connect/) and [OAuth 2.0](https://tools.ietf.org/html/rfc6749) framework for ASP.NET Core.

Founded and maintained by [Dominick Baier](https://twitter.com/leastprivilege) and [Brock Allen](https://twitter.com/brocklallen), IdentityServer4 incorporates all the protocol implementations and extensibility points needed to integrate token-based authentication, single-sign-on and API access control in your applications.

IdentityServer4 is officially [certified](https://openid.net/certification/) by the [OpenID Foundation](https://openid.net) and thus spec-compliant and interoperable.

It is part of the [.NET Foundation](https://www.dotnetfoundation.org/), and operates under their [code of conduct](https://www.dotnetfoundation.org/code-of-conduct). It is licensed under [Apache 2](https://opensource.org/licenses/Apache-2.0) (an OSI approved license).



For project documentation, please visit [readthedocs](https://identityserver4.readthedocs.io).



## Branch structure

Active development happens on the main branch. This always contains the latest version. Each (pre-) release is tagged with the corresponding version. The [aspnetcore1](https://github.com/IdentityServer/IdentityServer4/tree/aspnetcore1) and [aspnetcore2](https://github.com/IdentityServer/IdentityServer4/tree/aspnetcore2) branches contain the latest versions of the older ASP.NET Core based versions.



## How to build



* [Install](https://www.microsoft.com/net/download/core#/current) the latest .NET Core 3.1 SDK

* Install Git

* Clone this repo

* Run `build.ps1` or `build.sh` in the root of the cloned repo



## Documentation

For project documentation, please visit [readthedocs](https://identityserver4.readthedocs.io).



See [here](http://docs.identityserver.io/en/aspnetcore1/) for the 1.x docs, and [here](http://docs.identityserver.io/en/aspnetcore2/) for the 2.x docs.



## Bug reports and feature requests

Please use the [issue tracker](https://github.com/IdentityServer/IdentityServer4/issues) for that. We only support the latest version for free. For older versions, you can get a commercial support agreement with us.



## Commercial and Community Support

If you need help with implementing IdentityServer4 or your security architecture in general, there are both free and commercial support options.

See [here](https://identityserver4.readthedocs.io/en/latest/intro/support.html) for more details.



## Sponsorship

If you are a fan of the project or a company that relies on IdentityServer, you might want to consider sponsoring.

This will help us devote more time to answering questions and doing feature development. If you are interested please head to our [Patreon](https://www.patreon.com/identityserver) page which has further details.



### Platinum Sponsors

[](https://udelt.no)



[](https://github.com/dotnet-at-microsoft)



### Corporate Sponsors

[Ritter Insurance Marketing](https://www.ritterim.com)  

[ExtraNetUserManager](https://www.extranetusermanager.com/)  

[Knab](https://www.knab.nl/)



You can see a list of our current sponsors [here](https://github.com/IdentityServer/IdentityServer4/blob/main/SPONSORS.md) - and for companies we have some nice advertisement options as well.



## Acknowledgements

IdentityServer4 is built using the following great open source projects and free services:



* [ASP.NET Core](https://github.com/dotnet/aspnetcore)

* [Bullseye](https://github.com/adamralph/bullseye)

* [SimpleExec](https://github.com/adamralph/simple-exec)

* [MinVer](https://github.com/adamralph/minver)

* [Json.Net](http://www.newtonsoft.com/json)

* [XUnit](https://xunit.github.io/)

* [Fluent Assertions](http://www.fluentassertions.com/)

* [GitReleaseManager](https://github.com/GitTools/GitReleaseManager)



..and last but not least a big thanks to all our [contributors](https://github.com/IdentityServer/IdentityServer4/graphs/contributors)!