When comparing GoodSync vs rsync, the Slant community recommends rsync for most people. In the question“What are the best backup apps for Mac OS?” rsync is ranked 4th while GoodSync is ranked 5th. The most important reason people chose rsync is:
Only the changed parts of files are synced. For instance, if a long log file increases by just a few lines of text, a small diff will be sent to and saved in the archive. Rsync also compresses data in transit.
Specs
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Pros
Pro Integrates into Windows explorer
Pro Multi use beyond ftp
Pro Can create simple to complex automation rule sets
Pro Fast and reliable
Pro Modern UI design
Pro Fast and bandwidth efficient
Only the changed parts of files are synced. For instance, if a long log file increases by just a few lines of text, a small diff will be sent to and saved in the archive. Rsync also compresses data in transit.
Pro Works over SSH
SSH support allows sending files securely over the network by encrypting all communcation.
Pro Pre-installed on OSX and most Linux distributions
Many *nix systems bundle rsync so there's nothing to install. All you need to do is open up the terminal and start using rsync.
Pro Free and open source
Licensed under GNU.
Cons
Con No official GUI
To use rsync, you have to know your way around the command line.