A great source for all sorts of packages such as Node.js, Zshell, BitTorrent Sync, Redis, and Firefox Sync Server just to name a few. Check out the full list of packages or just add the source to your package manager :)
- Log into your NAS as administrator and go to Main Menu → Package Center → Settings → Package Sources.
- Click Add, type SynoCommunity as Name and http://packages.synocommunity.com/ as Location and then press OK to validate.
- Go back to the Package Center and enjoy SynoCommunity’s packages in the Community tab
See the official site for more info. Happy hacking!