On OS X, I highly recommend Dripbox. It automatically SCP's files that change on your local filesystem to a remote location.

https://github.com/epall/dripbox

I use it every day, editing files locally in Sublime Text 2, and then cmd-tabbing to Terminal to run tests. It's fast enough that I never even think about the delay.

Try this out: http://wbond.net/sublime_packages/sftp I haven't used it, but I'll probably end up taking a look at it soon. Please report back if you end up using it.

OK, this isn't "decent". But: On a Mac, with a good connection to the remote machine, I've found the combination of

- ExpanDrive, which uses MacFUSE to mount remote volumes over SSH, but with lots of metadata caching smarts to make it fast and reliable

- My hacky remote textmate script, which gives you a "mate" command on the remote machine via ssh tunneling (https://github.com/jaylevitt/textmate_remote)

to work well with TextMate. I've been meaning to try it on ST2 but haven't yet; as long as ST2 doesn't do the horrible thing TextMate used to do and continuously rescan the project directory in a blocking thread, you'll be cool.

TextMate 2 has `rmate` which lets you edit a remote file from a terminal session: http://blog.macromates.com/2011/mate-and-rmate/

I just use Transmit to mount remote file systems. Works like a charm.