Managify - Create & organize all your documents in a single platform.
skribbl - Word guessing based on drawing.
Files Board - Organize & manage your documents, photos and videos
LetsDraw.It - Guess and Draw, Drawing Battle, Pictionary, Copy picture - online drawing games where you can compare your skill with others.
Sismics Docs - Lightweight full-featured document management system 📁
gartic.io - Draw, guess, and win!