Calcurse
Calcurse is a calendar and scheduling application for the command line.
21 Alternatives To Calcurse
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.
GMinder
GMinder is an open source Windows System Tray app that pops up to remind you about Google Calendar events.
GNOME Calendar
GNOME Calendar is a simple and beautiful calendar application designed to perfectly fit the GNOME…
Gnome To Do
GNOME To Do is a simplistic personal task manager designed to perfectly fit the GNOME desktop.
LightWave 3D
LightWave 3D combines a state-of-the-art renderer with powerful, intuitive modeling, and animation tools.
Lightning Calendar
Organize your life — it’s about time!
Nozbe
Nozbe - to-do, task, project and time management productivity gtd getting things done online application with software for Apple iPhone iPad Android Mac Windows Linux
QOwnNotes
QOwnNotes is a free plain-text notepad with markdown support for Linux, Mac OS X and Windows, that works together with ownCloud Notes.
Rainlendar
Rainlendar - Customizable desktop calendar
Simple Calendar
A simple calendar with events (optional recurring and reminders), week numbers and a customizable…
VueMinder Calendar
Take control of your schedule and get reminded wherever and however you want.