CD-i Emulator is described as 'The CD-i emulator program (cdiemu) provides a fairly complete emulation of the hardware of an actual physical CD-i player' and is an app in the Gaming Software category. There are more than 10 alternatives to CD-i Emulator for a variety of platforms, including Windows, Linux, Mac, Android and iPhone. The best alternative is RetroArch, which is both free and Open Source. Other great apps like CD-i Emulator are Snes9x (Free, Open Source), ePSXe (Free), Project64 (Free, Open Source) and VisualBoyAdvance (Free, Open Source).
MESS emulates portable and console gaming systems, computer platforms and calculators. The project strives for accuracy and portability and therefore is not always the fastest emulator for any one particular system.
iOS: The popular Game Boy Advance emulator, GBA4iOS has been updated to version 2.0 and now works without requiring a jailbreak or any crazy workarounds. On top of GBA emulation, you'll also get support for Game Boy and Game Boy Color.