One of the things I love about KDE is kio's built in, long-time support for sftp:// and fish:// SSH file system abstraction. It lets kdelibs applications like KATE and Konqueror manage files remotely as though they are on the local computer. This saves mountains of time when, for example, working on a live website.
The same kind of functionality can be implemented system-wide with FUSE on Linux and fortunately the same is true for OS X.
First, download and install FUSE for OS X at http://osxfuse.github.com/. FUSE for OS X is a descendent of the abandoned MacFUSE project, be sure to include the MacFUSE abstraction layer during installation.
Now download and install the SSHFS package at https://github.com/osxfuse/sshfs/downloads.
Open Terminal then create a mount point for the remote filesystem and mount it like so:
$ mkdir ~/Documents/remote $ sshfs [email protected]:/path ~/Documents/remote
Now you can browse and modify the mounted filesystem in Finder or any other OS X application.