Emulation & virtualization

GCC for Windows 64 & 32 bits

SmartOS is a purpose-built, container-native hypervisor and lightweight container host OS for secure, performant, and convenient container hosting in public and private clouds

Qt Virtual machines manager. Contribute to F1ash/qt-virt-manager development by creating an account on GitHub.

JPC - The fast x86 PC emulator in 100% pure Java. Contribute to ianopolous/JPC development by creating an account on GitHub.

Open-source KVM software. Contribute to debauchee/barrier development by creating an account on GitHub.

With Porting Kit, you can install Windows games and apps on macOS easily using Wineskin technology!

Download q4wine for free. Q4Wine is a qt4 (http://www.qtsoftware.com/) GUI for W.I.N.E. (http://winehq.org/) It will help you manage wine prefixes and installed applications.

Karton — Run Linux programs on macOS, a different Linux distro, or a different architecture

Windows programs on Linux, easily

Opens exe and bat files as if they were native Linux applications

Run Windows apps such as Microsoft Office/Adobe in Linux (Ubuntu/Fedora) and GNOME/KDE as if they were a part of the native OS, including Nautilus integration. - GitHub - Fmstrat/winapps: Run Windo...

WineBottler packages Windows-based programs snugly into OS X app-bundles. No need to install emulators or operating systems - WineBottler uses the great open-source tool Wine to run the binaries on your Mac.

Darling — macOS translation layer for Linux

Compatibility tool for Steam Play based on Wine and additional components - GitHub - ValveSoftware/Proton: Compatibility tool for Steam Play based on Wine and additional components

Run Windows programs on Linux.

Fast PlayStation 1 emulator for x86-64/AArch32/AArch64 - GitHub - stenzek/duckstation: Fast PlayStation 1 emulator for x86-64/AArch32/AArch64

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libvirt, virtualization, virtualization API

Don't buy a Windows license, don't reboot and don't use a Virtual Machine. Try a free trial of CrossOver to run your Windows software on Mac, Linux and Chrome OS.