Vifm
Vifm is a file manager with a curses interface, which provides a Vim-like environment for managing objects within file systems, extended with some useful ideas from mutt. If you use vi, Vifm gives you complete keyboard control over your files without having to learn a new set of commands. Vim-like user mappings. Vim-like command-line mode with ranges and abbreviations. Vim-like marks and registers. Directory tree comparison. Operation undoing/redoing/backgrounding. FUSE file systems support. Color schemes can also be applied to specific sub-trees. File decorations are customizable according to their type and/or name. Named bookmarks (tags) Less-like preview mode with customizable viewers. Advanced file filtering and renaming capabilities. One or two pane views within tabs. Shell-like and external command-line editing. Table/grid/tree/miller views of files. Built-in integration with GNU Screen and tmux. Multi-block selection. Cross-platform (GNU/Linux, BSD, Solaris, Windows, Mac OS)
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Polo File Manager
Advanced file manager for Linux written in Vala. Supports multiple panes (single, dual, quad) with multiple tabs in each pane. Supports archive creation, extraction, and browsing. Support for cloud storage; running and managing KVM images, modifying PDF documents and image files, booting ISO files in KVM, and writing ISO files to USB drives. Polo is a modern, light-weight file manager for Linux with support for multiple panes and tabs; support for archives, and much more. Single-pane, dual-pane (vertical or horizontal split), and quad-pane layouts. Supports multiple tabs in each pane. Each tab has an embedded terminal which can be toggled with the F4 key. Devices popup displays list of connected devices with options to mount and unmount. Supports locking/unlocking LUKS encrypted devices. Support for browsing archives as normal folders. Supports the creation of archives in multiple formats with advanced compression settings.
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Worker
Worker is a two-pane file manager for the X Window System on UN*X. The directories and files are shown in two independent panels supporting a lot of advanced file manipulation features. The main focus is to make managing files easy with full keyboard control, also assisting in finding files and directories by using the history of accessed directories, live filtering, and access to commands by using the keyboard. Worker is free software developed by Ralf Hoffmann and released under the GNU General Public License V2 or later. VFS support for fast and easy access to archives and remote sites. Execute external programs by entering the name and arguments including unlimited history. Powerful mechanism to bind external programs to buttons, hotkeys, or file types (e.g. gimp, tar, diff, mount), including inserting names of selected files, source and target directories, and much more. Text viewer both separately and in an embedded pane.
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Directory Opus
Directory Opus is a complete replacement for Explorer, with far more power and functionality than any other file manager available today. Single or dual pane file display and folder trees. Tabbed interface let you keep multiple folders open and switch quickly between them. Unique Explorer Replacement mode provides a full replacement for Windows Explorer. Quickly filter, sort, group, and search your folders. Color-code your files, and assign status icons, star ratings, tags, and descriptions. View images, documents, and more. Image marking lets you sort your photos quickly and easily. Batch renaming including easy-to-use keyboard macros. View and edit file metadata. Support for FTP and archive formats like Zip, 7Zip, and RAR. Built-in tools including synchronize and duplicate file finder. Calculate folder sizes and print or export folder listings. Queue multiple file copies for improved performance. Fully configurable user interface, colors, fonts, toolbars, keyboard hotkeys, etc.
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