I already have 3 different sync programs, but I couldn't ignore the fact that this has LOADS of features that someone might be interested in and they're publishing a (beta) portable version:
License: free for personal use
https://www.puresync.net/features
https://www.puresync.net/download/portable
PureSync - backup and sync
Re: PureSync - backup and sync
PureSync sounds great and smilare to GoodSync (personal use) and Gs Richcopy 360 (Standard version).