Postman - The Collaboration Platform for API Development
Postman Workspaces - Organize and speed up API development work
Insomnia REST - The most intuitive cross-platform REST API Client ð´
Supabase - An open source Firebase alternative
RESTer - A REST client for almost any web service (Firefox and Chrome extension).
Firebase - Firebase is a cloud service designed to power real-time, collaborative applications for mobile and web.