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.

Day by Day Organizer - Time management app that combines Google Calendar and Google Tasks and enhances their features.

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

Calendar Lock PEA - Calendar Lock PEA is an encrypted desktop calendar with a day, week and month view. The shown calendars are never stored unencrypted on your disk, but exist only in the RAM. Platform-independent, Open Source, no installation or registration required.

Note Board - Productivity app. Save information like a sticky notes.

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