The demo version of Executor doesn't emulate the command-key functions commonly used in the Macintosh world, and every printed page has the word demo on it. Furthermore, you can't format or write to diskettes and hard disks. Executor has its own user interface, called Browser, which is similar to the Mac's Finder, but without the trash can, control panels, and famous Apple menu. Because Executor doesn't run the original Mac OS, it can't use some components that are highly integrated with it, such as INITs or CDEVs. Thus, you won't be able to use extensions such as QuickTime, ATM, and Open Transport.
Support is limited.
You can install TrueType fonts, and they show up in the font menu, but then are replaced by bitmap fonts on the screen and in printouts. This is absolutely necessary, and ARDI says that it will be the company's next target. Another issue is AppleTalk networking. It's still popular in the Macintosh world but is almost useless in the PC and Unix arena because it needs a special, expensive AppleTalk hardware interface. Thus, Executor will probably never support AppleTalk.