Which tools are you using for Virtual Machines?

At home, I use VMware Player and BlueStacks under Windows. In Linux, a just straight up use Qemu. I have shell scripts to launch my different VMs with the appropriate parameters.

At work I use Qemu for Windows with batch files to launch my VMs. I have hyper v enabled and Qemu performs quite well using the whp accelerator.

My workplace doesn't want to pay for a solution and the IT department is so paranoid about VirtualBox that they have a tool that periodically scans our laptop and automatically uninstalls it if it's detected.

I guess it depends how you define "using".

Day to day I generally favour Parallels via Vagrant;

But I also use VMWare Fusion and Virtualbox semi-regularly via Packer to build vagrant base boxes (https://app.vagrantup.com/koalephant/)

I used VMWare Workstation until I noticed everyone was leaving VMWare, so I followed suit and switched to VirtualBox.

At work, I use a few different ones, but primarily VMWare and Hyper-V. At home, I don't use any.

Microvm.nix with cloud-hypervisor

Virt-manager

Multipass.