Pocket Lists - World’s Friendliest To-Do List App
Lattice - Lattice helps teams stay aligned around their goals so they can accomplish more.
Synology Note Station - Without needing to spend money on Evernote, Synology Note Station provides a desktop client to organize all your random notes in one place.
Invision - Prototyping and collaboration for design teams
UpNote - A beautiful and clean cross-platform app for notes organizer
Gravit - Gravit is a browser-based pixel design and collaboration platform.