Mathematical computations in browser, steps included.
Virtual Machine Image To Test Penetration Skills
Johnny - A Simulator of a Simple von-Neumann Computer
A collection of Labs built for GNS3 running on a VMware
M3-IPC: A Communication Tool for Distributed Virtualization
FlexCloud is a resource scheduling simulator for Cloud Data Centers
Open Virtualization Nodes Infrastructure
Ready-to-use virtual machine images for Virtual box and Qemu.
HyperVM Virtual Machine Hosting Panel
An electromechanical computer simulation.
Honeydrive in vm environments
A multi purpose scripting language
LXCF (LXC Facility) generates LXC container of full OS environment.
this is a root to boot vmware vulnerable images
Open Source Software Toolbox for Biobanks
simple XEN guests / cloud management console shell