Free file viewer software for linux

Virtual Machine Manager software (virt-manager for short package name) is a desktop user interface for managing virtual machines. The project presents a summary view of running domains and their live performance & resource utilization statistics. A detailed view presents graphs showing performance & utilization over time. Ultimately it will allow creation of new domains, and configuration & adjustment of a domains resource allocation & virtual hardware. Finally an embedded VNC client viewer presents a full graphical console to the guest domain.

The application logic is written in Python, while the UI is constructed with Glade and GTK+, based on mockups provided by UI interaction designers. The libvirt Python bindings are used to interacting with the underlying hypervisor. This enables the application to be written independant of any particular hypervisor technology. Initially Xen was the primary platform supported, however, since libvirt 0.2.0 and virt-manager 0.3.1 it is possible to manage QEMU and KVM guests too. It is expected that support for additional hypervisors / virtualization products will expand even further over time as additional libvirt drivers are written.
The "Virt Install" tool (virtinst for short package name) is a command line tool which provides an easy way to provision operating systems into virtual machines. It also provides an API to the virt-manager application for its graphical VM creation wizard.

The "Virt Clone" tool (virtinst for short package name) is a command line tool for cloning existing inactive guests. It copies the disk images, and defines a config with new name, UUID and MAC address pointing to the copied disks.
The "Virtual Machine Viewer" application (virt-viewer for short package name) is a lightweight interface for interacting with the graphical display of virtualized guest OS. It uses GTK-VNC as its display capability, and libvirt to lookup the VNC server details associated with the guest. It is intended as a replacement for the traditional vncviewer client, since the latter does not support SSL/TLS encryption of x509 certificate authentication.

Pipe Viewer project is a terminal-based tool for monitoring the progress of data through a pipeline.

It can be inserted into any normal pipeline between two processes to give a visual indication of how quickly data is passing through, how long it has taken, how near to completion it is, and an estimate of how long it will be until completion.

pv is now considered to be stable code: it appears to work reliably on systems it has been tested on.

Image Viewer is an image viewer with real-time interactive pan and zoom viewing that uses the GTK+ toolkit and Imlib (or Imlib2).
Image Viewer can open and save to any image format supported by Imlib, rectangular crop, grab the screen, print, and display on the root window.
Main features:
- View
- Convert
- Grab (Screenshot)
- Print
- Rotate
- Crop
- Resize
- Display on Desktop
Enhancements:
- A bug was fixed in the saving of animated GIF images in which looping was not an option.
- The disposal method support for GIF images was improved.

X File Explorer (Xfe) is an MS-Explorer like file manager for X. X File Explorer is based on the popular, but discontinued, X Win Commander, originally developed by Maxim Baranov.
Xfe aims to be the file manager of choice for all the Unix addicts!
Why another file manager when the excellent Konqueror or Nautilus exist on Linux systems? The answer is quite simple : these file managers are very good, features rich and look wonderful, but they are like a brontosaurus when you are a console addict and only want to copy some files or delete it. Another problem is that they require either the whole Gnome or KDE desktops to be installed on your system!
On the contrary, Xfe is small, very rapid and only requires the FOX library to be fully functional. It can be launched from the command line in a fraction of second, and can efficiently complete the set of command line tools.
Main features:
- Four different file manager styles (one panel, two panels, tree list and one panel, tree list and two panels)
- Integrated text viewer (X File View, xfv)
- Integrated RPM viewer / installer / uninstaller (X File Query, xfq)
- Status line
- File associations
- Auto save registry
- Right mouse click pop-up menu in tree list and file list
- Change file(s) attributes
- Mount/Unmount devices (for Linux only)
- Toolbar
- Bookmarks (up to 20)
- Color schemes (GNOME, KDE, Windows...)
- Drag and Drop ( ctrl -> copy, shift -> move, alt -> symlink )
- Create / Extract archives (tar, zip, gzip, bzip2, compress formats are supported)
- Tool tips for long file names
- Progress bars or dialogs for lengthy file operations
- Image preview as thumbnails
- Ability to enqueue multimedia files (open command)
Key bindings:
- Help - F1
- View - F3, return
- Edit - F4
- Copy - F5, ctrl-c
- Cut - ctrl-x
- Paste - ctrl-v
- Move - F6, ctrl-d
- Rename - ctrl-n
- Delete - F8, del, ctrl-del
- Symlink - ctrl-s
- New file - F2
- New folder - F7
- Properties - F9
- Tree and one panel - ctrl-F1
- Tree and two panels - ctrl-F2
- One panel - ctrl-F3
- Two panels - ctrl-F4
- Hidden files - ctrl-F5
- Hidden folders - ctrl-F6
- Execute - ctrl-e
- Go home - ctrl-h
- Go up - backspace
- Terminal - ctrl-t
- Console file manager - ctrl-k
- Refresh - ctrl-r
- Select all - ctrl-a
- Deselect all - ctrl-z
- Invert selection - ctrl-i
- Add bookmark - ctrl-b
- Mount (Linux only) - ctrl-m
- Unmount (Linux only) - ctrl-u
- Quit - ctrl-q

KGraphViewer program is a Graphviz dot graph file viewer for KDE.
I used, in this program, code from the profiling tool kcachegrind (http://kcachegrind.sourceforge.net/cgi-bin/show.cgi/KcacheGrindIndex).
The tool is not finished but works pretty well for not huge graphs (< 1000 nodes).
Main features:
- loading of several graphs in tabs;
- saving of the recent files list;
- manual reload of files;
- display of a bird-eye view of the graph;
- moving of the graph by dragging;
- simple graph printing (no resizing nor cutting in pages);
- closing of the tabs;
- loading of nearly all graphviz example graphs;
- nodes and edges colors and all node shapes are supported
Kgraphviewer is using the boost/spirit library for graphs parsing. To avoid external dependencies, these Boost parts have been integrated in Kgraphviewer.

flactagger is a simple command line tool to tag FLAC files. flactagger is a tagger, not a tag editor/viewer.

flactagger is free software licenced under the GNU GPL.