Cost / License
- Free
- Open Source
Platforms
- Mac
- Windows
- Linux

Cassowary has been discontinued. Similar apps include VirtualBox, which is free and open source. Other options are WinBoat, QEMU, VMware Workstation Pro and KVM (Kernel-based Virtual Machine). You're spoiled for choice with Virtualization Tools like Cassowary: we list more than 25 alternatives for Windows, Linux, Mac, self-hosting and the web.




The Virtual Environment for secured and comfortable Web Browsing: On the basis of a “Browser-in-the-Box” concept a virtual machine is provided with a reduced operating system and a web browser encapsulated therein.

Danube Cloud is a cloud management software used for deploying, maintaining and automating cloud data centers and their processes.




CheerpX is an x86 virtualization technology for running executables and operating systems entirely client-side. It’s an always available, zero-cost virtual machine with guaranteed data privacy, powered by a WebAssembly JIT engine.

PearPC is an architecture-independent PowerPC platform emulator capable of running most PowerPC operating systems, like Mac OS X.


clearVM, formerly Witsbits, enables you to set up your servers with virtualization and deploy virtual machines faster than ever before. It’s a complete virtualization solution with a self-upgrading hypervisor and cloud-based centralized management, reducing time spent on...




PetiteCloud is a HyperVisor frontend for BSD. It has the following features:
Support for bhyve (including linux support) and QEMU (software emulation only until the FreeBSD port of kqemu is fixed). Any x86 OS as a guest (FreeBSD and Linux via bhyve or QEMU; all others vi.
x86 userspace emulator for ARM-based Linux machines. Enable the running of 32-bit x86 software on ARM-based PCs.
FAUmachine is a virtual machine, similar in many respects to VMWare[tm], QEMU or Virtual PC[tm]. What distinguishes FAUmachine from these other virtual machines, are the following features:

VMLite Workstation is a virtualization component, that allows you to run more than one operating system (OS) at the same time on a single physical computer. For example, you can simultaneously run Windows XP on a PC that is already running Windows 7.



