I use quite a few web-related pieces of software such as Drupal and Xenu with features that require FTP access to the filesystem. I do have SSH access (so I can use SFTP or scp), but not FTP access (there is no FTP server).
So what I'm hoping to find is an FTP to SFTP proxy: a piece of software I can install locally that I can use as an FTP server but that actually performs SFTP to my server of choice. On Linux or Windows.
If you have used any software that does this (I can't find any with Google) what did you use, and did you run into any limitations?