I am using a windows phone, however my desktop OS is Ubuntu. I would find it really neat to synchronize a calendar on my phone with a calendar on my desktop computer. However, on the WP there is only the outlook calendar. I found out how I can download the stuff from outlook into the Thunderbird Lightning calendar. However, I cannot add an event in Lightning which is then uploaded to the outlook calendar. Is there any calendar tool for Linux which interacts well with the online outlook calendar in both directions?
For exactly the same scenario I'm currently using mailbox.org which offers the total package starting from 2.5€/month: E-mails with easy PGP integration, calendars, contacts, tasks, word processing, and file sharing. It's actually a very nice alternative for something like Dropbox or Google Docs.
Windows Phone sync of emails, calendars, contacts and tasks works. I'm using their ActiveSync endpoint for that, but they provide (and actually prefer) the open standards as well. The company speaks openly about its values and as far as I can tell it actually lives them. Privacy is central, it exceeds the high german standards.
We are behind sabre/dav, which is the most popular open source implementation of the WebDAV, CardDAV and CalDAV standards. Besides us, developers and companies around the globe use our sabre/dav technology to deliver sync functionality to millions of users.
It is also located in Germany, so it has high privacy standards to comply to. I'm going to try it out as well.
Both companies also understood the challenge that Open Source software is facing right now and that's offering good user experiences comparable to those of the popular corporates.