DarkPS3 has released DragonFTP v0.10, a PS3 FTP Server homebrew application made with the PSL1ght SDK.
Download: DragonFTP v0.10 PS3 FTP Server
From the official site (linked above): This application is still very early in development but i think it ready for a release and for the public to enjoy i hope everyone enjoys this application.
* ftp server code based off of OpenPS3FTP (with minor improvements by me) - will release source for this when app 100% done
* default screen saver - after sixty seconds the screen saver will load with a dim to it
* changeable options screen