VirtualBox, QEMU, Wine, CrossOver, VMware Workstation Pro, Limbo PC Emulator, Windows Sandbox, Portable Virtualbox, VMware Workstation Player, virt-manager, QEMU Manager, Wineskin Winery, VMware Fusion, AQEMU, Multipass, Bochs, Deis, Boxes, MobaLiveCD, GDaaS, Turbo.net for Mac, Porting Kit, JavaQemu, WinApps, Awingu, QtEmu, Goldberg Emulator, JPCSIM, Qemu Simple Boot, GreenVBox, VirtualBuddy, WinConn, Darling, Veertu, xhypervisor, FAUMachine, Virtual PC, VMware Server, Parallels Workstation, VMLite XP Mode, SysInfoTools Virtual Disk Machine Recovery Tool, USBFastBoot are some alternatives to Parallels Desktop.