Officely - The only desk booking tool that lives in Slack

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.

OfficeMixer - Automated office bookings

UpNote - A beautiful and clean cross-platform app for notes organizer

RobinPowered - Robin coordinates meeting spaces, people, and things in your office. Complete with analytics and insights that uncover usage and help optimize space.

Notesnook - Notesnook is a simple and private note taking app that keeps your notes organized and synced on your phone, tablet and computer.