Selenium - Selenium automates browsers. That's it! What you do with that power is entirely up to you. Primarily, it is for automating web applications for testing purposes, but is certainly not limited to just that.
API List - A collective list of APIs. Build something.
Screenster - 10x faster UI testing without a line of code.
Abstract APIs - Simple, powerful APIs for everyday dev tasks
Robot framework - Robot Framework is a generic test automation framework for acceptance testing and acceptance...
Phantombuster - A marketplace of simple to use no-code APIs