gcal/outlook like calendar component
A date/time picker widget
JobScheduler workload automation to execute jobs and workflows
WeekToDo is a Free and Open Source Minimalist Weekly Planner and To Do
IGSuite is a web-ajax-based Integrated Groupware Suite
Prayer Times for iPhone and Android built-in Calendar
Open source project management
jQuery date and time input picker
professional CRM and groupware service, ready for the cloud
Web-based appointment scheduler
A trading platform including ERP, CRM, and accounting