voices.live - Connect your Choir, sing and share together
Pocket - When you find something you want to view later, put it in Pocket.
Utilo - An incentivized knowledge sharing platform.
Raindrop.io - All your articles, photos, video & content from web & apps in one place.
Shoutboards - Internal announcement platform for better knowledge sharing.
Tettra - Tettra is a company wiki that helps teams manage and share organizational knowledge.