PostgreSQL
Cloud providers with free plans
- heroku
- elephantsql.com (20 MB database)
IDE for PostgreSQL
- pgweb-demo.herokuapp.com (web console, free)
- pgAdmin
- datagrip (IntelliJ, paid)
Basic example
https://github.com/webmakaka/ReactJS-and-PostgreSQL-Full-Stack-Application