I second the opinion that ...

I second the opinion that http://www.seafile.com/ is at the moment the best solution out there and use it myself. However one should also keep an eye on https://www.syncany.org/. They do take security seriously: https://syncany.readthedocs.org/en/latest/security.html

http://blog.patshead.com/2014/09/self-hosted-cloud-storage-comparison-2014-edition.html

blog.patshead.com

Self-Hosted Cloud-Storage Comparison - 2014 Edition - Patshead.com Blog

Early last year, I decided that I should replace Dropbox with a cloud-storage solution that I could host on my own servers. I was hoping to find …