Ant Commander is a fully configurable file manager. Several file systems are supported: file, zip, FTP, WebDAV, etc. Several kinds of panels are available: directory table, directory tree, text editor, image viewer, HTML viewer, command line, etc. You can configure the menu, the toolbars, the panels, the actions, and more. Several file operation are supported: copy, move, delete, multiple rename, create directory, zip, unzip, etc. External plugins are available to add more skins, for BeanShell, SSH Shell, Telnet, VNC, and more file systems (tar.gz, Samba, etc.). It is skinnable and OS-independent, and has bookmarks, history, many file operations, macros, and more.
FileRunner is a two-pane file manager for Unix. It is simple and efficient and has a built-in FTP/SFTP/adb client. It does a reasonable (and improving) job on Windows systems. It features a simple and powerful interface, history and Hotlist (bookmarks), a recursive directory menu of the entire filesystem tree, browsing FTP, sFTP, and adb directories as easily as normal directories, asynchronous file transfers, cached directory listings, asynchronous file operations, built-in command shell windows synchronized with file panels, extensibility by adding your own command buttons, and user-defined file pattern/actions.
pfm is a terminal-based file manager written in Perl. All pfm commands can be invoked with one- or two-key commands. It features integration with version control systems, use of the ReadLine library for friendly command line editing, support for executing user-defined commands, colored filenames according to extension or type, a single-file and multiple-file mode, and bookmarks for directories.
Puggle is a desktop search engine that provides full text search over files, folders, music, photos, Web pages, and other data that are stored locally on your computer. Puggle is able to create many different indices, each with a different configuration. For example, you may have a different index for your music collection as well as your documents. Each of them can be used on demand, simply by loading it. Furthermore, Puggle supports indexing of portable devices, like USB flash drives or external hard disks. The index will be stored in the device, using relative paths, allowing you to search over the data very quickly on any computer.