Welcome to SeaMonkey Add-ons.
Add extra features and styles to make SeaMonkey your own.Close
Rated 5 out of 5 stars
I don't really know why this is rated so poorly. Lightning is the best open source calendaring app that I know of. It works well, lets me sync with all my Google calendars, gives me a nice heads-up sidepane, and I hope it continues to be maintained.This review is for a previous version of the add-on (1.9).