Day by Day Organizer - Time management app that combines Google Calendar and Google Tasks and enhances their features.
Stickies - Stickies is a PC utility written to replace Post-It-style notes left stuck to your monitor.
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.
Notezilla - Colorful & powerful sticky notes app for Windows & Phones.
Business Calendar - Powerful and easy to use calendar app for Android including weather, widgets and tasks.
Microsoft Sticky Notes - A brand new Sticky Notes for Windows has arrived!