For those looking for a challenge, there's also a Thunderbird 'CardDav' issue, which pretty much has a dollar for each thumbs-up on bsource at $434.usd (after minus 10% fee).
https://www.bountysource.com/issues/1015434-add-support-for-online- address-books-using-the-carddav-format ** Tags added: bounty -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1199774 Title: No calDAV and iCalendar support To manage notifications about this bug go to: https://bugs.launchpad.net/band-aids-uphone/+bug/1199774/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs