Quite occasionally MSX ape survive:

Open Source emulators

MESS is not an MSX aper, however like the platform that emulates the big total of systems; one of people systems is the MSX. Available for Windows, Unix, Mackintosh & Amiga.

openMSX is an open source MSX emulator that utilizes a unique emulation model & seeks to achieve the greatest level of accuracy imaginable. Available for Linux, FreeBSD, Mac OS X and Microsoft Windows.

BrMSX is an open source MSX emulator written inside assembly language for the x86 platform.

blueMSX is a relatively fresh open source MSX imitator that inside its short life-time has be a virtually all exact & user friendly MSX imitator on the scene based on data from an extensive imitator comparison performed by MRC. Available for Microsoft Windows.

Other licenses
fMSX (Unix, Mac, MS-DOS, Windows, PC9800, etc): one of a oldest MSX aper, by having quite controversial licensing; a great deal of more ape come according to fMSX fMSX-Amiga (Amiga) CJS MSX2 (MSDOS) RuMSX (MS-Windows) NLMSX (MS-Windows)