When comparing Send Anywhere vs rsync, the Slant community recommends rsync for most people. In the question“What are the best apps to transfer files between two computers in LAN?” rsync is ranked 1st while Send Anywhere is ranked 6th. 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 Cross Platform
Pro Can upload files to their server for 24hrs
Pro Discovers receivers in same network automatically
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 Cannot create hotspot automatically
Sender and receiver need to be connected to each other (through WiFi/WiFi Hotspot) prior to sending files.
Con Needs Internet to generate keys
Con No official GUI
To use rsync, you have to know your way around the command line.