The aim of this page is to give an overview over the latest calendar features. Thus, we hope you'll find the following feature comparism helpful!
|Development status||Actively maintained||Deprecated|
What operating systems are supported?
|Windows, Linux, Mac OS X with Mozilla Thunderbird (see System Requirements)||Windows, Linux, Mac OS X (see System Requirements)|
|Supported calendar formats
What calendar formats do Lightning / Sunbird support?
|iCalendar (ICS), CalDav, Sun Java System Calendar Server (WCAP), Google Calendar (via this add-on)||iCalendar (ICS) and Comma Separated Values (CSV) for Outlook|
|Always up to date
Will I regularly get updates?
|Seamlessly integrated into Thunderbird
Can I manage my schedule within my favorite e-mail client?
Can I use it as a standalone program so that I don't need other applications?