SourceRSC is a fast download server management tool by Brainless. It syncs files between your game server and fast download server. It is free for non-commercial, non-scripted use. You can download it from Brainless.us.
Traditionally, server administrators would manually keep fast download servers in sync by separately copying and deleting files to/from both, as well as manually compressing each file added to the fast download server. With SourceRSC, you don't need to! You can run the tool to automatically compare the files on your fast download and game servers. It will automatically compress and upload new files to your fast download server, as well as delete extra files (if configured to do so).
You can download the .rsc and .exc files for version 5.0.1 here.