OSBoxes

[labbe5]

https://www.osboxes.org/virtualbox-images/

We offer open-source (Linux/Unix) virtual machines (VDIs) for VirtualBox, we install and make them ready-to-use VirtualBox images for you. From here you can download and attach the VDI image to your VirtualBox and use it. We offer images for both architectures 32bit and 64bit, you can download for free for both architectures. At the moment we have plans to offer you 30+ Linux/Unix distributions.

Puppy is not offered. But it can be the host.

Further reading :
VMware Images
https://www.osboxes.org/vmware-images/

All images for VirtualBox and VMware have the same username and password. After logging into virtual machine that you’ve downloaded you can change ‘username’ & ‘password’ or create a new user.

Username – osboxes
Password – osboxes.org

For Root user account:

Password – osboxes.org

Also, you can find the login details in the download page of respective VM.
https://www.ostechnix.com/osboxes-free- ... irtualbox/

To test distros :
https://distrotest.net/
Puppy is among distros that can be tested.