We purchased Rumpus to make file transfers between our staff and clients a much simpler process. The web interface alone is well worth the price of purchase! On top of that it's ftp implimentation is fantastic, the administration is simple enough for those new to the ftp servers to set it up without hassle, yet is robust enough for the seasoned ftp server admin happy. Technical support is _top notch_ and in the true tradition of Mac OS it "just works", and does so right out of the box. This is hands down the best ftp server for OSX if you want to get the job done, and is especially a time saver as you don't have to support people who don't understand ftp! point them to the web interface and the job is done. Money very well spent.