muCommander is a cross-platform file manager with a dual-pane interface that features support for FTP, SFTP, SMB, NFS, HTTP, Amazon S3, Hadoop HDFS, Bonjour/Zeroconf, email attachments, archives in many formats (including Zip, RAR, 7z, GZip, Tar, Bzip2, ISO, NRG, AR, Deb, and LST), bookmarks, credential management, themes, multiple windows, full keyboard control, and many configuration options. It is available in 23 languages.
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.
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.