Wine is an implementation of the Windows API on top of X and Unix. It does not require Microsoft Windows, but can use native Windows DLLs if they are available. It provides both a development toolkit for porting Windows source code to Unix as well as a program loader, allowing many unmodified Windows programs to run on x86-based Unixes.
minor feature: Shell32 and WineBus libraries converted to PE. Unicode data updated to Unicode version 14. Mono engine updated to version 6.4.0, with COM improvements. More work towards Dwarf 3/4 desupport. HID joystick enabled by default. Various.