Download of RsyncOSX 6.8 for Mac was available from the developer's website when we last checked. We cannot confirm if there is a free download of this app available.
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. The application lies within System Tools, more precisely Backup & Restore. The actual developer of this free Mac application is Thomas Evensen.
From the developer:
RsyncOSX is a GUI frontend for the rsync command-line tool.
Rsync is a file-based synchronization and backup tool. There is no custom solution for the backup archive. You can quit utilizing RsyncOSX (and rsync) at any time and still have access to all synchronized files.
You may want to check out more Mac applications, such as Synchronize! X Plus, Folder Backup or PHOTORECOVERY, which might be similar to RsyncOSX.