Synology Cloud Station

If you have a Synology (DSM 6 or newer) then this is a one click install.

It does pretty much everything Owncloud does, but with some marked advantages.

Primarily you can access the files directly on the server; if you share out a folder, and you drop a file into the folder on the server (use cp command for example) Cloud Station will handle it.

With ownCloud, you deal with the file store on the server as a sealed container; the files are in there, but you can't touch them. This means essentially you are reduced to either only accessing them via WebDAV (slow) or you have to keep a separate duplicate copy on the server (running ownCloud client) requiring twice the disk space.