Headless Chrome Ruby API
Core server and tier 1 (built-in) plugins
The undetected self-hosted browser automation platform
A faster, simpler way to drive browsers supporting the Chrome DevTools
A mobile devtools for debugging web sites and web apps
A lightweight, extendable front-end developer tool for mobile web page
A scriptable browser like PhantomJS, based on Firefox
Scriptable Headless Browser
Point & click to forbid/allow any class of requests made by browser
Useful Firefox plugin for esniper bidding
Contributed stuff for munin (plugins, tools, etc...)
An interactive ping utility.