PhantomJS : PhantomJS is a headless WebKit with JavaScript API. It has fast and native support for various web standards: DOM handling, CSS selector, JSON, Canvas...
tota11y : an accessibility visualization toolkit that aims to reduce the friction of a11y testing
TagUI : TagUI is a general purpose tool for automating web interactions
Litmus : Test and track your emails. Email previews, analytics and spam filter testing.
Nx : Nx is a smart and extensible build framework to help you architect, test, and build at any scale — integrating seamlessly with modern technologies and...
mtools is a collection of helper scripts to parse and filter MongoDB log files (mongod, mongos), visualize log files and quickly set up complex MongoDB test environments on a local machine.