HTTPState

(https://httpstate.com

(https://github.com/httpstate/httpstate)

A data layer to connect all kinds of applications. You pick a "UUID" and start storing and retrieving data from it. I've written clients for 8 languages now, one main driver is it should be as easy as possible to use.

Another premise is that data is open, enabling re-usability and collective applications. You can see some featured data streams on the site, you can use them on your app in like 1 minute.