| Name | Country | City | Rating | |
|---|---|---|---|---|
| Magnum Opus Software | 0.00 ±0.0 | |||
| Magnum Soft | 0.00 ±0.0 | |||
| Main Street Publishing | 0.00 ±0.0 | |||
| Malmberg | 0.00 ±0.0 | |||
| Manfred Hahn | 0.00 ±0.0 | |||
| Manhattan Software | 0.00 ±0.0 | |||
| Manitou Software | 0.00 ±0.0 | |||
| Maraex Soft | 0.00 ±0.0 | |||
| Marc Ed, Inc. | 0.00 ±0.0 | |||
| Marcel Programming | 0.00 ±0.0 | |||
| MarcinSoft Company Ltd. | 0.00 ±0.0 | |||
| Market Directions | 0.00 ±0.0 | |||
| Martech Games | 0.00 ±0.0 | |||
| Master Control Software | 0.00 ±0.0 | |||
| Master's Software House | 0.00 ±0.0 | |||
| Mastertronic (UK) | United Kingdom | 0.00 ±0.0 | ||
| Mastertronic (USA) | United States | 0.00 ±0.0 | ||
| MatheGraphics Software | 0.00 ±0.0 | |||
| MatoSimi | Slovakia | 0.00 ±0.0 | ||
| Matrix Software, Inc. | 0.00 ±0.0 |
