Just to say that I moved to using Duplicacy when CrashPlan stopped their free server-to-server offering.
While Duplicacy has a way to go before it’s as easy to use via a GUI as CrashPlan was, I’m finding Duplicacy to be much nicer to use from the command line.
And it’s efficient!
And it does cross-server de-duplication (no more backup bloat from moving large files from one server to another)!
And it works with all sorts of storage back-ends!
And it’s open-source!
Thank you @gchen for all your work on Duplicacy!