Spike - Spike solves businesses' communication chaos by bringing together email, team chat, collaborative docs, and meetings, into one feed.
Playlist Machinery - Tools that help you create & organize your Spotify playlists
Keybase Chat - End-to-end encrypted chat built into Keybase
Playmoss - Create playlists from YouTube, Vimeo and SoundCloud
Crypho - End-to-end-encrypted messaging and file sharing
podsync - Simple and free service that lets you listen to any YouTube or Vimeo channels, playlists or user videos in podcast format