Google Calendar - Spend less time managing your day & more time enjoying it

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.

Business Calendar - Powerful and easy to use calendar app for Android including weather, widgets and tasks.

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

Jorte - Schedule books must be practical and has a good design.

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