Postman - The Collaboration Platform for API Development
Firebase - Firebase is a cloud service designed to power real-time, collaborative applications for mobile and web.
TablePlus for Windows - A native GUI tool for MySQL, PostgreSQL, SQL Server & more
restdb.io - restdb.io lets you create databases and REST APIs quickly. Development databases are free. Powerful web-based and mobile-friendly data management.
Insomnia REST - The most intuitive cross-platform REST API Client ð´
RemoteStorage - An open protocol for per-user storage OWN YOUR DATA