Full-sized drag & drop event calendar
WeekToDo is a Free and Open Source Minimalist Weekly Planner
An enterprise-class CRM and more!
Sync Outlook with Google, SOGo or any other CalDAV / CardDAV server
WeekToDo is a Free and Open Source Minimalist Weekly Planner and To Do
Prayer Times for iPhone and Android built-in Calendar
Free, open-source Human Capital Management system
free php calendar
Shared recurring calendar for tasks
A MySQL based multiuser time management system built in Java.
Digital Planner
Open-source Property Management System (PMS)