HTTP Archive : The HTTP Archive tracks how the Web is built.
HTTPie : HTTPie—aitch-tee-tee-pie—is a command line HTTP client with an intuitive UI, JSON support, syntax highlighting, wget-like downloads, plugins, and more
Træfɪk : Træfɪk is a modern HTTP reverse proxy and load balancer made to deploy microservices with ease. It supports several backends (Docker, Swarm, Mesos/Mar...
hyper.rs : Fast and safe HTTP for the Rust language.
Webhook Tester : Webhook Tester allows you to easily test webhooks and other types of HTTP requests.