CoffeeRun - Let everyone enter their order for coffee runs
Synology Note Station - Without needing to spend money on Evernote, Synology Note Station provides a desktop client to organize all your random notes in one place.
Lunch Roulette - Collaboration by grouping coworkers randomly for lunch.
UpNote - A beautiful and clean cross-platform app for notes organizer
QuizBreaker - A fun online quiz game for teams to get to know each other
Notesnook - Notesnook is a simple and private note taking app that keeps your notes organized and synced on your phone, tablet and computer.