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Monday, February 23, 2009

Desktop,Servers and supercomputers

Desktop

Ubuntu: one of the most popular Linux distributions.
Main article: Desktop Linux

Although there is a lack of Linux ports for some Mac OS X and Microsoft Windows programs in domains such as desktop publishing[37] and professional audio,[38][39][40] support for common applications roughly equivalent to those available for Mac and Windows is available for Linux.[41]

Most Linux distributions provide a program for browsing a list of thousands of free software applications that have already been tested and configured for a specific distribution. These free programs can be downloaded and installed with one mouse click. A digital signature guarantees that no one has added a virus or a spyware to these programs.

The two main frameworks for developing graphical applications are those of GNOME and KDE. These projects are based on the GTK+ and Qt widget toolkits, respectively, which can also be used independently of the larger framework. Both support a wide variety of languages.

Many free software titles that are popular on Windows, such as PidginMozilla FirefoxOpenOffice.org, and GIMP, are also available in versions that run on Linux. A growing amount of proprietary desktop software is also supported,[42] see List of proprietary software for Linux. In the field of animation and visual effects, most high end software, such as AutoDesk Maya, Softimage XSI and Apple Shake, is available for Linux, Windows and/or Mac OS X. CrossOver is a proprietary solution based on the open source Wine project that supports running Windows versions of Microsoft OfficeIntuit applications such as Quicken and QuickBooksAdobe Photoshop versions through CS2, and many popular games such as World of Warcraft and Team Fortress 2.

Besides the free Windows compatibility layer Wine, most distributions offer dual boot and x86 virtualization for running both Linux and Windows on the same computer. According to the Wine developers, "Wine is still under development, and it is not yet suitable for general use."[43]

The collaborative nature of free software development allows distributed teams to localize Linux distributions for use in locales where localizing proprietary systems would not be cost-effective. For example the Sinhalese language version of the Knoppix distribution was available for a long time before Microsoft Windows XP was translated to Sinhalese. In this case the Lanka Linux User Group played a major part in developing the localized system by combining the knowledge of university professors, linguists, and local developers.

The performance of Linux on the desktop has been a controversial topic; for example, Con Kolivas accused the Linux community of favoring performance on servers. He quit Linux kernel development because he was frustrated with this lack of focus on the desktop, and then gave a "tell all" interview on the topic.[44]

See also: Linux gaming

[edit]Servers and supercomputers

Servers designed for Linux

Historically, Linux distributions have mainly been used as server operating systems, and have risen to prominence in that area; Netcraft reported in September 2006 that eight of the ten most reliable internet hosting companies ran Linux distributions on their web servers.[45] (As of June 2008, Linux distributions represented five of ten, FreeBSD three of ten, and Microsoft two of ten.[46]) This is due to its relative stability and long uptime, and the fact that desktop software with a graphical user interface for servers is often unneeded. Enterprise and non-enterprise Linux distributions may be found running on servers. Linux distributions are the cornerstone of the LAMP server-software combination (Linux, ApacheMySQL,Perl/PHP/Python) which has achieved popularity among developers, and which is one of the more common platforms for website hosting. Linux distributions are commonly used as operating systems forsupercomputers. As of August 2008, out of the top 500 systems, 423 (84.6%) run a Linux distribution.[47]

[edit]Embedded devices

See also: Embedded Linux and Linux devices
Sharp Zaurus SL-5500 runningOpenZaurus and OPIE, with docking cradle and stylus

Due to its low cost and ability to be easily modified, an embedded Linux is often used in embedded systems. Linux has become a major competitor to the proprietary Symbian OS found in the majority of smartphones—16.7% of smartphones sold worldwide during 2006 were using Linux[48]—and it is an alternative to the proprietary Windows CE and Palm OS operating systems on mobile devices. Cell phones or PDAs running on Linux and built on open source platform became a trend from 2007, like Nokia N810,Openmoko's Neo1973, Motorola RAZR2 v8, Motorola ROKR E8, Motorola MING series, Motorola ZINE and the on-going Google Android. The popular TiVo digital video recorder uses a customized version of Linux.[49]Several network firewall and router standalone products, including several from Linksys, use Linux internally, using its advanced firewall and routing capabilities. The Korg OASYS and the Yamaha Motif XSmusic workstations also run Linux.[50] Furthermore, Linux is used in the leading stage lighting control system, FlyingPig/HighEnd WholeHogIII Console.[51]

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