Arc is a customized Redpill Loader for DSM 7.x (Xpenology) with enhanced Hardwaresupport, Addons, guided (semi-automated) Installation and more. Multiple customization options are built-in. It is modified to run on different Hardware (Wiki for more Informations). Commercial use is not permitted and strictly forbidden!
Why do you think that https://github.com/wjz304/rr is a good alternative to arc