Wine allows you to run windows applications under Ubuntu. Wine (originally an acronym for “Wine Is Not an Emulator”) is a compatibility layer capable of running Windows applications on several POSIX-compliant operating systems, such as Linux, Mac OSX, & BSD.

What is Wine Linux?

Wine (Wine is Not an Emulator) is for getting Windows apps and games to run on Linux and Unix-like systems, including macOS. As opposed to running a VM or emulator, Wine focuses on Windows application protocol interface (API) calls and translating them to Portable Operating System Interface (POSIX) calls.

Is Wine good for Ubuntu?

Yes, installing Wine itself is safe; it’s installing/running Windows programs with Wine that you have to be careful of. regedit.exe is a valid utility and it’s not going to make Wine or Ubuntu vulnerable on its own.