Postman - The Collaboration Platform for API Development
Insomnia REST - Design, debug, test, and mock APIs locally, on Git, or cloud. Build better APIs collaboratively for the most popular protocols with a dev‑friendly UI, built-in automation, and an extensible plugin ecosystem.
curl.io - Share your files from your Terminal / SSH
EchoAPI - Next-gen API development collaboration platform. More than just API design, debug, test, load-testing, and mock.
TermHere - “Open Terminal Here” shortcut for Finder
Hoppscotch - Open source API development ecosystem