On projects too small to have a workflow for automated deployment (let's be real: not everything is worth the overhead of setting up all of those tools), I've found the duo of Sublime and ExpanDrive[1] works well. The latter mounts a server that is accessible via SSH as a local drive (it's essentially a nice GUI for something like sshfs).

Otherwise, some combination of tmux and vim/nano/emacs.

1. http://www.expandrive.com/expandrive