Walling for Windows - Visual walls for your ideas and projects. Now on Windows.
Paws for Trello - The best way to use Trello on your desktop
Butter - Butter is a newly launched chatting application that focuses more on the privacy of its users.
Momentum - Agile goal and performance management
Milanote - Milanote is a note taking app for creative work.
Hello Epics for Trello - Simplify your Trello board with parent/child relationships