Looking Back At A Decade of Open Source Virtualization

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| That’s what some people would have us believe now that the virtualization
| hype is reaching never before seen heights, and large acquisitions & mergers
| are starting to become quite common ( Citrix bought Xensource, Novell picked
| up PlateSpin, Sun acquired innotek, Quest Software snapped up Vizioncore
| while VMware treated itself to Thinstall, and so on).
|
| But few people realize or fail to acknowledge that the large majority of
| virtualization techniques and developments were started as, or remain Open
| Source projects.
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http://virtualization.com/guides-how...irtualisation/
http://tinyurl.com/2wmtq8

With the exception of VMWare, a lot of projects are GPLed.


Related:

Virtualization: A feature of the hardware, not the OS?

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| "Even though Xen has been part of (Linux products) for a while, it's really
| just now getting ready for prime time," Haff said. "VMware is still very much
| the dominant player in virtualization."
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http://news.zdnet.com/2100-9584_22-6206867.html


VirtualBox: A Review

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| Overall, VirtualBox is an excellent application for virtualizing your
| favorite operating systems. I use it to virtually run all of the operating
| systems that we talk about here on LinuxHow2, such as Ubuntu, Fedora, Gentoo,
| and *PCLinuxOS. Virtual machines are a great way to test new operating
| systems, sandbox an OS, and quickly wipe out and reinstall problem operating
| systems; it's becoming common to virtual an operating system, because of the
| speed of use, and because said operating system does not directly interfere
| with the host OS, if it's infected with viruses (as is often the case with
| Windows) or you just plain don't need it anymore, it's as simple as one click
| to delete it off your system for good. * * * *
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http://linuxhow2.com/Feature_Article..._A_Review.html