NASLite is a Network Attached Storage (NAS) server operating system.

TFTP Server supports tsize, blksize, and interval options, supports PXE boot, and can be run standalone or as a daemon.

ProFTPD is a proven, high-performance, scalable FTP server.

VirgoFTP is an FTP GUI based on SWT, It provides a CuteFTP-like interface for users who turn from Microsoft Windows to Linux.

Pure FTP Server is a fast, production quality, standards-conformant FTP server based on Troll-FTPd.