QuizUp - QuizUp gives you the opportunity to test your trivia skills against friends and strangers throughout the world.
Lunchclub - Curated 1:1 professional connections
Water Cooler Trivia - Weekly office trivia quizzes for you and your co-workers 🎯
Serendipity - Serendipity is a PHP-powered weblog engine which gives the user an easy way to maintain a blog.
Tea Minus - The multi-device office drink round app
Lunch Roulette - Collaboration by grouping coworkers randomly for lunch.