Square’s meticulous HTTP client for the JVM, Android, and GraalVM.
A type-safe HTTP client for Android and the JVM
Feign makes writing java http clients easier
Eclipse Jetty - Web Container & Clients - supports HTTP/2, HTTP/1.1, HTTP/1.0, websocket, servlets, and more
Unirest in Java: Simplified, lightweight HTTP client library.
http-kit is a minimalist, event-driven, high-performance Clojure HTTP server/client library with WebSocket and asynchronous support
Java HTTP Request Library
Asynchronous Java made easier
Fast Parallel Async HTTP/SSH/TCP/UDP/Ping Client Java Library. Aggregate 100,000 APIs & send anywhere in 20 lines of code. Ping/HTTP Calls 8000 servers in 12 seconds. (Akka) www.parallec.io