I gave them my email address for an invite months ago, and since then I've seen lots and lots of talk about AeroFS, but still it's not available, so I lost interest. If you have a web page and a blog and repeatedly get mentioned on HN, but you don't release some kind of public beta for more than 6 months, you're crazy.

I did get an invite and installed, but I can't actually do anything with it. There's no Android client, so it just sits on my laptop doing nothing.

I thought it would at least have some sort of local network sharing service like DAAP, UPnP or anything at all.

The Android client is under very active development. If you'd like, feel free to upvote http://support.aerofs.com/forums/67721-feature-requests/sugg... and you'll get notified as soon as it's ready!

Yeah I was excited too. We actually got invites, but when we ran into trouble, were never able to get a response from support and gave up.

That's quite unusual and unfortunate! If you're still willing, give our newest version a tryshoot me an email at yuri@aerofs.com and I'll make sure someone looks at your problems ASAP.

We're actually usually very responsive in our support channels (support@aerofs.com, twitter, and the support.aerofs.com forums), so my sincere apologies.

Closed source is a definite dealbreaker: how do I know there aren't horrible flaws in their cryptographic protocols? Short of reverse engineering their binaries there's not you can do.

The features AeroFS provides seem incredibly similar to what you can get from open source alternatives, for example the Tahoe-LAFS distributed encrypted filesystem and Duplicati:

Tahoe: http://www.tahoe-lafs.org/

Duplicati: http://www.duplicati.com/ (can store data to Tahoe-LAFS)