Slack - A messaging app for teams who see through the Earth!
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.
Confluence - Confluence is content collaboration software that changes how modern teams work
UpNote - A beautiful and clean cross-platform app for notes organizer
Flock - A faster way for your team to communicate
Notesnook - Notesnook is a simple and private note taking app that keeps your notes organized and synced on your phone, tablet and computer.