SofaRun allows you to enjoy MSX games without moving from your Sofa, you just need a JoyMega adapter, and a MegaFlashROM SCC+ SD if you want to use MegaRoms (support for other cartridges might come soon). It also supports snapshots for each ROM, and lots of other settings. See the help file in the download for more information.
Solid VBasic Compiler + linker for MSX DOS. This enables the generation of .com files from .bas files.
Joost send this BASIC plotter tool, in which a joystick can be used to make real-time drawings.
Checks the spelling of ASCII text files. Comes with a file-browser that supports directories, a dutch dictionary and Pascal source code
The Swiss army knife among debuggers.
The complete source code to a thread engine for MSX.
This set of tools adjusts some of the standard multiplication routines that will speed up BASIC, XBASIC and compatible (PowerBASIC/NestorBASIC) systems on the MSX turboR.
The famous X-BASIC compiler allows you to run ordinary MSX-BASIC programs up to 100 times faster than without running X-BASIC optimizations. This useful tool comes with an explanation of all the features of X-BASIC.
A small Win32 utility which can edit disk images containing Xak savegames.
Z80 and R800 are two MSX-DOS commands to switch the CPU mode on the MSX Turbo R. These commands can be also executed from the Basic (BLOAD"Z80.COM",R or BLOAD"R800.COM",R). Placed in the root directory, it will allow you to easily change the CPU before running any program.