Mocha - the fun, simple, flexible JavaScript test framework Used at the Team Custom Lisbon Meetup in 2014

Jasmine: Behavior-Driven JavaScript Recommended by Christoph Burgmer at CSSConf 2014

Hologram - Style Documentation Build System Markdown in your SCSS. Recommended by Nicole Sullivan

Huddle/PhantomCSS Visual/CSS regression testing with PhantomJS

BBC-News/wraith responsive screenshot comparison tool by the BBC

CasperJS, a navigation scripting and testing utility for PhantomJS and SlimerJS open source navigation scripting & testing utility written in Javascript

Selenium - Web Browser Automation automates browsers

Type-o-matic A browser extension by Nicole Sullivan that finds all the fonts on a page

Free Beautiful Online Survey & Form Builder | Typeform Mentioned by Cyd Harrell

Blurb Mobile 2.0 - Make books and share photo stories from your iPhone or iPad Mentioned by Cyd Harrell