ofxSCP

Header-only openFrameworks addon that copies files or folders to a remote machine with scp, on a background thread. Fires copyCompleteEvent when it finishes.

ofxSCP scp;
ofAddListener(scp.copyCompleteEvent, this, &ofApp::onCopied);
scp.send("192.168.1.10", "fred", ofToDataPath("renders"), "/home/fred/renders", true);

Needs ssh/scp on the path and key-based login to the remote (it can't answer a password prompt). See also ofxRsync.