vym - VYM (View Your Mind) is a tool to generate and manipulate maps which show your thoughts.
Contra Wireframe Kit - Open source wireframe kit for design and prototyping 🚀
Freeplane - Freeplane is a powerful and free software for building mind maps.
Platforma - Wireframe library of layouts and UI elements
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.
Craftwork - A collection of User Interface resources made by Craftwork