Browse free open source Calendar software and projects below. Use the toggles on the left to filter open source Calendar software by OS, license, language, programming language, and project status.
An enterprise-class CRM and more!
Take your office and CRM into the cloud!
Zentyal is a Linux Small Business Server
professional CRM and groupware service, ready for the cloud
private digital diary & note taking appliaciton
A software for the management of a permaculture oriented garden.
Time-Tracking for companies and teams with up to 250+ users
WeekToDo is a Free and Open Source Minimalist Weekly Planner and To Do
Calibration Control and Maintenance Management
free php calendar