Free desktop software for linux

NicE Desktop is a Debian-based, live Linux distribution. Being a live distribution, it runs from portable storage, such as a CD/DVD or USB flash drive. This operating system can be run in both text mode and graphical mode.

NicE Desktop comes with many programs for both recreational and administrative purposes. Its main goals are to be useful and entertaining while maintaining user-friendliness, as well as to provide a "complete" temporary operating system for any PC user.

Linkage is a Gtk+ BitTorrent client written in C++.

Linkage is a BitTorrent using gtkmm and libtorrent. Features include DHT, PEX, UPnP, desktop notifications and torrent creation.

Zimbra Desktop is the next generation leap forward for Web 2.0 applications- now you can have Zimbras Ajax-based collaboration experience online and offline.
That means when you are out of the office without a connection (say, in a plane, train, or automobile), you can keep working without missing a beat.
Zimbra Desktop benefits:
- The better overall usability of Web 2.0 (conversation view, tags, Zimlets) comes to the desktop; plus the web and desktop experience are now the same
- Switch from online to offline mode seamlessly and automatically; when online you are immune to hiccups and interruptions caused by server latency
- Faster search, better rich mail rendering, and a self-organizing inbox more adept handling larger email volumes than traditional clients (no more 2GB mailbox limits!)
- Significantly reduced administration overhead managing and maintaining local files; they are synced to the Zimbra Server where they can be safeguarded
- Fundamentally a cross browser, cross platform solution (Windows, Apple, Linux)
- Its open source; expensive investments in proprietary clients are no longer required
This project will help you write emails, add new appointments, edit documents; when you re-connect changes will be automatically synced to the Zimbra Server.
Main features:
- Full email support: compose, edit, delete, reply, or make drafts online and offline
- Fast Zimbra search including Advanced Search builder
- Support for contacts, both locally stored and GAL
- Easy set up wizard for account configuration
- Existing user preferences (folders, signatures, settings, etc) are imported
- Works with ZCS 4.5+ servers
- Fast launch with automatic, transparent sync
Zimbra Desktop is available for you to try as an alpha version. We encourage you to take it for a test drive and provide us your feedback.
Enhancements:
- Bug Fixes

k5n Desktop Calendar (k5nCal, for short) application is a calendar application for your desktop. It shares features with applications like Apple iCal and Microsoft Outlook, but it is open source.
This project is built upon Java Calendar Tools, and all data is stored in RFC 2445 iCalendar format.
Main features:
- Supports Mac OS X, Linux or Windows (requires Java 1.5)
- Saves all entries in iCalendar RFC 2445 format
- Simple and intuitive user interface similar
- Open source license so you can download and modify the source and use it free of charge.

GChemPaint is a 2D chemical structures editor for the Gnome desktop.

GChemPaint should enable embedding some chemistry in files from other programs using Bonobo.

NoMachine NX Desktop Server is a cost-effective solution that enables any business to deploy centralized applications to thin clients, mobile and home workers, over any network connection, with astonishing speed and ease of use.
NX uses the power of the X-Window system to bring the network transparency of the Unix world to any operating system, including Windows and Mac OS/X. Additionally NX bridges the standard file and print services of the client, with the Unix file and print services of the server, so that, wherever you are, you can see the same applications and the same network resources.
Besides the native X-Window protocol, NX is able to translate, encrypt and compress industry standard protocols like the RDP protocol, used by Microsoft and Citrix, and the VNC protocol, used by a number of freely available tools, giving secure and fast access to the complete set of facilities made available inside a corporate network. The power of network computing has never been more affordable!
Main features:
- Deploys X11, RDP and VNC desktops securely over the Internet
- Provides unmatched performance, thanks to exclusive compression and aggressive caching
- Connects to XDMCP servers, Windows Terminal Services and Citrix MetaFrame servers on the backend, using the same client
- Seamlessly integrates single X11 applications with the native client desktop
- Lets users leave their applications running while disconnected and resume from any client on the network
- Lets applications access any file system on the client as if it were on the server
- Lets users cut and paste between local and remote applications
- Prints from the server to printers installed on the client
- Plays sound and multimedia produced by the remote application
- Integrates with your authentication infrastructure and directory service
- Supports industry standard SSL encryption and Transport Layer Security
- Fully integrates with SSH, avoiding the need for a further network access port
- Provides seamless integration with Web portals and corporate Intranets with one-click access to any application.
Enhancements:
- The new packages fix a number of problems such as the server Debian package not being fully Debian compliant, the NX server leaving a session in status Connecting when trying to suspend it, and the server being unable to find the xauth command on Solaris platforms.