Sketch Repo - Collection of resources for anyone who uses Sketch
SuperNotecard - Introducing SuperNotecard. SuperNotecard is an online writing tool that features virtual notecards to help arrange facts or scenes, track details, organize paragraphs, and clarify your composition process.
Barchartrace - A simple MIT opensource bar chart race generator
vym - VYM (View Your Mind) is a tool to generate and manipulate maps which show your thoughts.
Charts Factory - Create simple charts super fast and for free!
Freeplane - Freeplane is a powerful and free software for building mind maps.