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Duende Software

We help companies using .NET to build identity and access control solutions for modern applications

Welcome to Duende Software

This organization is the home for our products, support and documentation.


  • IdentityServer - the most flexible and standards-compliant OpenID Connect and OAuth 2.0 framework for ASP.NET Core.
  • BFF Framework - security framework for SPAs and Blazor WASM

Quickstart UIs

  • Main - UI using in-memory users and configuration
  • ASP.NET Identity - UI using ASP.NET Identity for user storage


Free Open Source

Popular repositories

  1. The most flexible and standards-compliant OpenID Connect and OAuth 2.x framework for ASP.NET Core

    JavaScript 849 185

  2. BFF Public

    Framework for ASP.NET Core to secure SPAs using the Backend-for-Frontend (BFF) pattern

    C# 244 60

  3. Samples Public

    Samples for our Products

    JavaScript 143 174

  4. Automatic token management for machine to machine and user-centric web app OAuth and OIDC flows

    C# 80 17

  5. .NET CLI Templates for Duende IdentityServer

    C# 50 9

  6. Quickstart UI for Duende IdentityServer

    C# 31 6


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