Top 12 C# web-api Projects

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1. FastEndpoints

   1 18 6,013 9.7 C#

   A light-weight REST API development framework for ASP.NET 8 and newer.

   

2. ReSharper

   www.jetbrains.com sponsored

   ReSharper is now available in VS Code and Cursor. ReSharper brings a professional toolset for C# developers backed by over 20 years of experience, enterprise-grade security, SOC 2 compliance, and the trust of companies worldwide.

   

3. ApiEndpoints

   2 22 3,196 3.5 C#

   A project for supporting API Endpoints in ASP.NET Core web applications.

   

4. craftsman

   3 33 1,167 4.6 C#

   A .NET scaffolding tool to help you stop worrying about boilerplate and focus on your business logic 🚀

   

5. JsonApiDotNetCore

   4 7 715 9.0 C#

   A framework for building JSON:API compliant REST APIs using ASP.NET and Entity Framework Core.

   

6. RestClient.Net

   5 11 405 4.2 C#

   The safest way to make REST calls in C# with an MCP Generator

   

7. eisk.webapi

   6 0 236 0.0 C#

   Project based on latest .NET (v6.0) technologies for building scalable web api, along with clean architecture patterns.

   

8. webapiclientgen

   7 3 174 8.6 C#

   Strongly Typed Client API Generators generate strongly typed client APIs in C# .NET and in TypeScript for jQuery and Angular 2+ from ASP.NET Web API and .NET Core Web API

   

   Project mention: How Can AI Help Lazy Programmers? | dev.to | 2026-08-07

   Strongly Typed Client API Generators (webapiclientgen) generate strongly typed client APIs in C# .NET and in TypeScript for jQuery and Angular 2+ from ASP.NET (Core) Web API.

9. AppSignal

   www.appsignal.com sponsored

   AppSignal knows why the f*#k it crashed. Stop vibe-debugging. Every exception, every backtrace, grouped so you see patterns, not noise.

   

10. PeakLimsApi

    8 7 72 1.2 C#

    🧬 Source-available fair-code licensed LIMS. The laboratory software you'll enjoy using.

    

11. tic-tac-toe-csharp-playground

    9 2 38 5.1 C#

    Another fun project just to update what I know about C# :video_game:

    

12. TolkienApi

    10 2 31 0.0 C#

    The Tolkien API for Middle-Earth lovers.

    

13. StoreCleanArchitecture-NET

    11 3 27 1.0 C#

    This is a basic project to demonstrate an introduction about the implementation of Clean Architecture on .NET

    

14. office-file-api-in-web-api-app

    12 1 1 6.8 C#

    Create an ASP.NET Core Web API application that uses the Office File API library as a server-side engine.

    

C# web-api related posts

• Getting Started with FastEndpoints for Building Web APIs in .NET

  1 project | dev.to | 12 Nov 2024

• Sisk – Lightweight .NET Web Framework

  5 projects | news.ycombinator.com | 31 Aug 2024

• Choosing Between Controllers and Minimal API for .NET APIs

  1 project | dev.to | 19 Dec 2023

• How do you structure large Minimal API Projects?

  8 projects | /r/dotnet | 7 Dec 2023

• Microsoft launches new app store for Windows – from React to Shoelace, Lit, Vite

  1 project | news.ycombinator.com | 8 Oct 2023

• Idea validation | low-code API factory

  1 project | /r/SaaS | 16 Sep 2023

• Verticle Slice Architecture

  1 project | /r/dotnet | 18 Jun 2023
• A note from our sponsor - AppSignal
  www.appsignal.com | 10 Oct 2026

  Stop vibe-debugging. Every exception, every backtrace, grouped so you see patterns, not noise. Learn more →

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