One of the most unknown tools (>10 years) http://sikulix.com/
It allows play mouse/keyboard event scrips BUT it allows to find components (coords) via screen OCR so you can make your scripts multi resolution/desktop independent. Also, it's Java based so you can play it multi SO.
As a suggestion, same way you override default icon based on regexp, it would be useful if it could override also page title; i.e using facebook, web whatsapp in the office without (visually) being noticed :)
Moreover, you could add a preset of "useful" page overrides ;)
Congrats to ZeroCell dev, good work! it looks simple and perfectly usable with well formed files, but how it deals with the day-by-day office files (not so well structured, lot of edge cases and so)? Maybe an entry for these cases would be necesary in the documentation.