Gollem is a Web-based file manager that provides the ability to fully manage a hierarchical file system stored in a variety of backends such as a SQL database, as part of a real filesystem, or on FTP, Samba or SSH servers. It supports uploading and downloading of files, basic file operations, permissions support, and MIME recognition and viewing of files through the Horde MIME library. It is fully internationalized and translatable.
aria2 is a utility for downloading files. The supported protocols are HTTP(S), FTP, BitTorrent, and Metalink. It has a powerful segmented downloading ability, downloading a file from multiple sources and multiple protocols and utilizing your download bandwidth to the maximum. It supports downloading a file from HTTP(S)/FTP and BitTorrent at the same time, while the data downloaded from HTTP(S)/FTP is uploaded to the BitTorrent swarm. Using Metalink's chunk checksums, aria2 automatically validates chunks of data while downloading a file like BitTorrent.
net2ftp is a Web-based FTP client, offering standard FTP client functionality using a browser. Users can also zip files, email them in attachments, edit code in their browser, or view code with syntax highlighting. Configuration options: restrict the access to one FTP server; ban IP addresses or FTP servers; set a daily consumption limit; and 3 kinds of logging. It works under PHP's Safe Mode. MySQL is optional (only required for logging and consumption tracking).