I agree the "send me differences" model is appealing. A version based off rsync was created back in 1999 but patents killed it. I think the patent in question r

I agree the "send me differences" model is appealing. A version based off rsync was created back in 1999 but patents killed it. I think the patent in question runs out pretty soon though... The Tragedy of the RProxy: http://ozlabs.org/~rusty/rproxy.html http://ozlabs.org/~rusty/rproxy.html