Why not use Unison? It only does pairwise synchronization, but is Free software and extremely mature.

(sigh, it seems the tech community has become blind to anything that isn't heavily blogvertised.)

> (sigh, it seems the tech community has become blind to anything that isn't heavily blogvertised.)

There's so much released and so much noise, it's hard to keep track of all the good things that come out - especially if they're not mentioned within their tribe of friends/followed ppl.

I don't know how to get round that - the web is huge and no one can keep track (or have a network that touches) all of the open source releases.

Unison is no longer under active development, right? Would love to use it but going forward, is there a big enough community to fix bugs, add new features etc?

http://www.cis.upenn.edu/~bcpierce/unison/status.html

It has not been a problem in my experience. There isn't major development (proper support for inotify and flexible topology would be nice), but Unison does what it says extremely solidly. There's certainly an active user community and the occasional bugfix/feature. Reread that notice again concentrating on the good parts, and take a look at the changelog. There's certainly activity, it's just not time intensive - this is both the blessing and apparent curse of using a high level language.

Unison requires a bit more administrative work to set up and maintain than BTSync, in my experience. People really like the Dropbox experience.

Had high hopes for BTSync, and we used it for several months on recommendation of a colleague. However, we found it was fairly buggy in terms of handling files with non-alpha numeric characters in it, and files just wouldn't sync. We suspect it might have been a rogue path parser for .SyncIgnore, not following unix file conventions (we were using it on OSX and Linux), but recently moved over to AeroFS and haven't had a problem since.

I do like BTSync and considered it, but I'm not the biggest fan of the idea that my data is stored on everyone's computer. AeroFS allows me some semblance of control, and as I grow, it will allow me to add users easily.

I won't know until I try it though, I could just as easily change my mind and use BTSync.

It doesn't put your data on everyone's computer. The data goes onto the computers that are sharing the folder. If you have two computers, the data is on two computers.

BTSync could be installed everywhere, but it only syncs between the folders with the same key. So if only your computers have your key(s) then only they would have contents of your folder(s).