I've also worked with Workstation.

I've also tried VMware solutions. It's not as fast, the VMware. 

We used a different solution. Its performance would depend on the results, and it gave us problems. I switched to VirtualBox because it is more compatible with Oracle products.

I've previously worked with VMware and Workstation. In those cases, the starting and stopping of the machine took far too long. Oracle is much faster.

I have experience with KVM. I have used KVM since my company did software testing for four months. I also use other virtualization services.

We previously used VMware and Proxmox KVM.

I have used VMware, Hyper-V, RHEV, OpenStack, and, now, VirtualBox. I have used all these hypervisors in my environments for demos and test purposes.

I prefer this solution to Hyper-V.

I used VirtualPC before, but VirtualBox is much better. It offers more configuration options in its settings, and we wanted an alternative to Microsoft products.

We had other costumers that had used other solutions, such as VMware and Microsoft hypervisor, but I've pushed them all over to VirtualBox because of its flexibility and potential. 

For virtualizing desktop solutions, we did not use a previous solution. For server environments, we did. I have used Microsoft Hyper-V and VMware ESXi.

We previously used VMware. Virtualbox is easier to install when I already have a host OS. I don't need another client to connect to it.

We used different products from different vendors, but we chose VirtualBox because it's easy to use and is very stable.

We we also use the VMware workstation, VMware Player.

I chose Oracle VirtualBox because it is easily available, free, and open source. It is also the industry standard for web development virtualization software.

We tried VMWare VMPlayer in the beginning, but VirtualBox outperformed it and so it became our choice.

We used a different solution before and switched due to high licensing costs and almost non-existent support.

We also use Proxmox VE, which is better in many ways aside from the networking and not being able to install unless it is a 64-bit architecture.