awesome - A dynamic window manager for the X Window System developed in the C and Lua programming languages.
Ghostnote - Add notes to anything.
Wonder - Your personal research assistant
Box Notes - Box Notes: take meeting notes, share status updates and plan projects together instantly. Online, across devices.
Shrowze - The human personal assistant you summon by text.
Somnote - More often than not, note-taking is a pressing, off the cuff movement that requests a quick and productive approach.