gremlins.js »

a monkey testing library written in JavaScript, for Node.js and the browser. Use it to check the robustness of web applications by unleashing a horde of undisciplined gremlins.

CodePen »

“CodePen is a playground for the front end side of the web. It’s all about inspiration, education, and sharing.”

“Need to build a reduced test case to demonstrate and figure out a bug? CodePen is great for that. Want to show off your latest creation and get feedback from your peers? CodePen is great for that. Want to find example of a particular design pattern for you project? CodePen is great for that.”

Framer »

“a modern prototyping tool. It can help you to quickly build and test complex interactions and rich animations for both desktop and mobile.”

Remote Preview »

A tool that “allows you to preview any URL on large number of mobile devices simultaneously. Just enter a URL, hit enter, and new URL gets automatically loaded on each device. Remote preview works on platforms like Android, Blackberry, iOS, Maemo, Meego, Symbian, Windows Phone and WebOS.”

Yeoman »

“Yeoman is a robust and opinionated client-side stack, comprised of tools and frameworks that can help developers quickly build beautiful web applications. We take care of providing everything needed to get started without any of the normal headaches associated with a manual setup.”

Timeline JS »

Beautifully crafted timelines that are easy, and intuitive to use. TimelineJS can pull in media from different sources. It has built in support for: Twitter, Flickr, Google Maps, YouTube, Vimeo, Dailymotion, Wikipedia, SoundCloud and more media types in the future.

Creating one is as easy as filling in a Google spreadsheet or as detailed as JSON.