XdoX - Start challenges, log your progress and also get a unique profile page!
A Product Design Challenge - Get a design challenge to solve real-world problems
The Bored Hoard - Sieve the web for cool websites you probably never knew existed. Supporting the smaller independent sites that Google ignores. All revealed in a weekly box delivered online every Friday.
Frontend Mentor - Supercharge your front-end skills by building in a real-life workflow. Solve real-world HTML, CSS and JavaScript challenges whilst working to professional quality designs.
Confetti - Confetti is the all-in-one tool for all your conferences, festivals, workshops and social events.
User Inyerface - A painful illustration of bad UX