[tasn]

It does, because that's a requirement for managing those seamlessly, through the existing contacts/calendar apps. Anyhow, it's open source and all the networking code is very self contained (so it'd be easy to review) so it's easy to verify the security.

I think we were striving for a similar result, but have different requirements, for example you with the permissions, and me with the app being open source.

As for EteSync: desktop support is planned.