Radicale

Radicale is a calendar, contact, and TODO list server. It provides a centeralized place to store all these things so that they can be backed up and sync across devices.

To get started with radicale, request an account, then login in at cal.clortox.com.

You can bookmark this page, as anytime you may want to create new calendars, address books, todo lists, or more, this is where you will have to go.