The best open source alternative to VMware Fusion is VirtualBox, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to VMware Fusion and many of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to VMware Fusion are KVM (Kernel-based Virtual Machine) (Free, Open Source), Darling (Free, Open Source), Portable Virtualbox (Free, Open Source) and Boxes (Free, Open Source).
VirtualBox is a powerful x86 and AMD64/Intel64 virtualization product for enterprise as well as home use.
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VirtualBox vs VMware Fusion opinions
Almost everyone thinks VirtualBox is a great alternative to VMware Fusion.
ByteRanger While VirtualBox has never failed me on a Linux host, I have never been able to get VirtualBox working reliably on MacOS. The free/opensource part of VirtualBox doesn't even hold a candle to VMware feature wise. The added extensions module that makes it more comparable to VMware is only free for personal use, and the commercial license is priced like VMware's server offerings, many times more expensive than VMware Fusion Pro.
Negative comment • 6 months ago
Hansaplast VirtualBox is a free alternative
Positive comment • almost 3 years ago
JohnFastman VirtualBox is almost always the better option compared to VMWare. Open source and free, works on Windows, Mac and Linux. Vital and important software for running virtual machines, testing other operating systems, etc.
Positive comment • almost 5 years ago
vb078 Open source and free with nearly the same options.
KVM (for Kernel-based Virtual Machine) is a full virtualization solution for Linux on x86 hardware containing virtualization extensions (Intel VT or AMD-V). It consists of a loadable kernel module, kvm.
Darling — macOS translation layer for Linux Fast Darling runs macOS software directly without using a hardware emulator. Free Like Linux, Darling is free and open-source software. It is developed openly on GitHub and distributed under the GNU GPL license version 3.
Portable-VirtualBox is a free and open source software tool that lets you run any operating system from a usb stick without separate installation. It unpacks and adjusts the paths and configuration of VirtualBox so it will run portably.
Wineskin is a tool used to make ports of Windows software to Mac OS X. The ports are in the form of normal Mac application bundle wrappers. It works like a wrapper around the Windows software, and you can share just the wrappers if you choose. Best of all, its free!