I recently switched from administering my systems using Windows to OS X. I've found really nice alternatives to damn near everything I used previously, however I have not found a nice GUI editor (sometimes VIM just hurts my face for long scripting jobs) that can transfer files over SCP and that is sudo-aware.
WinSCP did all these things previously for me, Allowed me to log in, edit a file locally, and every time I save, it sends the file to the remote server. It also gave me the ability to sudo edit files, so I was able to edit files not owned by my primary user without having to sudo chown a million files just to change them back.