Dood : The Puzzle Planet - A strategy puzzle game for the smart ones
Nibbler - Free tool for testing how good your website is, and what you can do to improve it. Check accessibility, SEO, social media, compliance and more.
PH Builds a Puzzle - A realtime, collaborative jigsaw puzzle.
Colorific - Colorific Hair Color Salons give you amazing color at an affordable price.
Atomas - Simple rules, endless fun!
HTML Validator - HTML Validator is a Mozilla extension that adds HTML validation inside Firefox and Mozilla.