Virtualbox. I tried the proprietary version when I needed to work with an iPhone, but normally I use the OSE, since for some reason it will do fullscreen on the monitor I pick; the proprietary version always went to the primary monitor.

I've tried KVM with I think Virt-Manager (from Fedora), but couldn't get it to work properly.

KVM

It's the virtualisation's new kid on the block
That is what impressed me last year

https://wiki.archlinux.org/index.php/Linux_Containers

I use kvm so i voted
also i start to get rid of virtualbox and use only kvm

We made a decision not to include container solutions (such as Virtuozzo and LXC) in this category, but we're open to feedback on the topic.

--jeremy

I voted for VirtualBox, as this is a poll for the 2010 prods of the year.

VirtualBox is certainly a darling, and I really like it a lot.

Xen, however, is (I think) where things are going to need to go for serious environments hosted in the datacenter.

Hope that helps

.

VMware is the winner IMO - I really like ESXi

As zVM isn't present in the list I won't vote :}

virtualbox was the first thing i used.. and it certainly does the job for me.. i mean.. i need to boot into windows? no problem>virtualbox .. though is there anything that will let the virtual machine take control over like 75% of my processor? i mean , linux doesn't even use that much while windows screams of pain in the amount it has.

also i use virtualbox to make myself an idea about the distro before making an usb out of it (did you know usb flash drives also have a life span ?? LOL)

I use both, VMware and KVM. Both are great, but there are situations in that one of them is better or just easier to use.
I started with QEMU, switched then to VirtualBox but I stopped using it, when something didn't work and I couldn't compile it. If I remember correctly, there were some incompatibilities. Some libs were just too new and VirtualBox required some older ones.

However, since I needed a program for virtualization (for testing purposes) and I had some problems with KVM, I tried VMware for the first time and I was amazed how easy it is and how great it works.

This doesn't mean VirtualBox is bad, it's just a program I don't want to work with. :/

Have you tried giving the VM more than one virtual processor core? You can do that by going into your VM settings->System; under the Processor tab, there's a slider there for setting how many virtual CPU cores to assign to the VM.

Sorry for accidentally voting for VirtualBox; apparently I like AQEMU and KVM better. Especially since VirtualBox could be killed by Oracle at any moment.

KVM rocks

I think virtual box is the best

Virtual Box

ok thanks i tried but i get it now i see my intel t5750 doesn't have virtualization support.. too bad thanks anyway,...

as for the ontopic..

why would oracle buy virtual box and then destroy it??