Lunchclub - Curated 1:1 professional connections
Design Files - Professional resources for digital designers
Serendipity - Serendipity is a PHP-powered weblog engine which gives the user an easy way to maintain a blog.
Google Design Sprint Starter Kit - This Kit helps you to run your first Google Design Sprint.
Lunch Roulette - Collaboration by grouping coworkers randomly for lunch.
Powerbooks - Bite-sized Knowledge for Entrepreneurs