synoSync 0.9 for Mac was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The actual developer of this free Mac application is Sys-worX.net. The program is included in Developer Tools. According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software.
From the developer:
synoSync is a small tool that decrypts DLC files and pushes them on the Synology NAS to the pre-installed Synology Download Station. In addition, synoSync supports the Click’n’Load protocol. synoSync supports any Synology Disk Station from DSM 5.x (it could also work with 4.x, but this is not tested yet).
You may want to check out more software for Mac, such as CoreAnimationKioskMenu, QCCoreAnimationKioskStyleMenu or RenderToVertexArray, which might be related to synoSync.