Day by Day Organizer - Time management app that combines Google Calendar and Google Tasks and enhances their features.
Qikipedia - Instant Wikipedia summary cards on any web page
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.
Read Something Great - A fun tool to help fix your information diet.
Business Calendar - Powerful and easy to use calendar app for Android including weather, widgets and tasks.
Wonder for Slack - Remember the things your team forgets