Wine and ReactOS are probably our best bet for archiving programs and making them usable in the indefinite future. With Wine, you have the advantage of having a

Wine and ReactOS are probably our best bet for archiving programs and making them usable in the indefinite future. With Wine, you have the advantage of having access to the source code, both to peruse and modify. Being able to edit Wine's source code and use its debugging facilities does help a lot in figuring out compatibility issues.