Publicly - Build in the open
Next! Fitness - A.I. powered gym
Go Fucking Do It - Set a deadline and a price. If you fail, you pay.
Dualnback.works - Dual N-back is a specific brain training exercise, that's been shown by research - it might improve fluid intelligence.
Task Fighter - The beat`em up calendar/todolist
PopcornTime iOS App - Watch movies & TV shows instantly on iOS (no jailbreak req.)