restsharp/RestSharp

The automatic type-safe REST library for .NET. Refit turns a REST API into a C# interface and generates the HttpClient implementation, with support for HttpClientFactory, pluggable serializers and a testing package.

Json.NET is a popular high-performance JSON framework for .NET

A type-safe HTTP client for Android and the JVM

Feign makes writing java http clients easier

Java DSL for easy testing of REST services

🏊🏾 Simplified HTTP request client.

A meticulous HTTP client for the JVM, Android, and GraalVM.

Simple HTTP, REST, and SSE client library for Go

A simple, yet elegant, HTTP library.