ardalis/ApiEndpoints - A project for supporting API Endpoints in ASP.NET Core web applications.
CarterCommunity/Carter - Carter is framework that is a thin layer of extension methods and functionality over ASP.NET Core allowing code to be more explicit and most importantly more enjoyable.
reactiveui/refit - The automatic type-safe REST library for .NET Core, Xamarin and .NET. Heavily inspired by Square's Retrofit library, Refit turns your REST API into a live interface.
canton7/RestEase - Easy-to-use typesafe REST API client library for .NET Standard 1.1 and .NET Framework 4.5 and higher, which is simple and customisable. Inspired by Refit
StefH/RestEase-Client-Generator - A Visual Studio Extension to generate a RestEase compatible client based on a Swagger / OpenAPI specification files
HttpRepl - The HTTP Read-Eval-Print Loop (REPL) is a lightweight, cross-platform command-line tool that's supported everywhere .NET Core is supported and is used for making HTTP requests to test ASP.NET Core web APIs and view their results.
rest-client - REST Client allows you to send HTTP request and view the response in Visual Studio Code directly.
OpenAPI.NET - The OpenAPI.NET SDK contains a useful object model for OpenAPI documents in .NET along with common serializers to extract raw OpenAPI JSON and YAML documents from the model.
NSwag - The Swagger/OpenAPI toolchain for .NET, ASP.NET Core and TypeScript.
Crunch.vscode-openapi - This Visual Studio Code (VS Code) extension adds rich support for the OpenAPI Specification (OAS) (formerly known as Swagger Specification) in JSON or YAML format
httpstat.us - Easily generate different HTTP responses for testing
Biarity/Sieve - Sieve is a simple, clean, and extensible framework for .NET Core that adds sorting, filtering, and pagination functionality out of the box.
featherhttp/tutorial - Quick tutorials on how you you can build easy web applications with FeatherHttp. Learn how to build lightweight server-side web applications
ApiBoilerPlate - A simple yet organized project template for building ASP.NET Core APIs in .NET Core 3.1
CleanArchitecture - Clean Architecture Template for Blazor WebAssembly Built with MudBlazor Components.
pdevito3/craftsman - Craftsman is the workhorse behind the Wrapt framework and provides a suite of CLI commands for quickly scaffolding out new files and projects for your .NET Web APIs with simple CLI commands and configuration files.