An HTTP client for Android, Kotlin, and Java.
Eclipse Jetty - Web Container & Clients - supports HTTP/2, HTTP/1.1, HTTP/1.0, websocket, servlets, and more
Fluent Java HTTP client
Unirest in Java: Simplified, lightweight HTTP client library.
Type-safe HTTP client for Android and Java by Square, Inc.
An asynchronous http client in Java, with a clean, callback-based API, using Netty 4.x
Feign makes writing java http clients easier
Convenient http client for java, inspired by python request module
Asynchronous Java made easier