aria2 is a lightweight multi-protocol & multi-source download utility
Hurl, run and test HTTP requests with plain text
A CLI, cURL-like tool for humans
Store and access data published by OwnTracks apps
mitmproxy implemented with golang
True object-oriented Java web framework without NULLs
Language-agnostic HTTP API Testing Tool
An interactive command-line HTTP and API testing client
Hyper Cookie Encapsulation System