| 1 | M and G Corp | Rusia | Moscow | |
| 2 | M Meerman Design | | | |
| 3 | M&H Software | Reino Unido | | |
| 4 | M&H Software | Reino Unido | | |
| 5 | M&J Regan Software | Reino Unido | | |
| 6 | M&J Regan Software | Reino Unido | | |
| 7 | M&J Software | Reino Unido | | |
| 8 | M&J Software | Reino Unido | | |
| 9 | M. Angel Rios Domingo | España | | |
| 10 | M. Gerhard | | | |
| 11 | M.42 Software | Neil Talbott | Reino Unido | |
| 12 | M.A. Lovell | Reino Unido | | |
| 13 | M.A. Lovell Software | M.A. Lovell | Reino Unido | |
| 14 | M.A. Smith | Reino Unido | | |
| 15 | M.A.L. Programing Ltd | Rusia | Volgodonsk | |
| 16 | M.A.P. Publications | | | |
| 17 | M.A.P. Software | M.A.P. Publications | | |
| 18 | M.B. Software | Reino Unido | | |
| 19 | M.C. Lothlorien | | | |
| 20 | M.C.Lothlorien | | | |
| 21 | M.E.L. Chip Club | Croacia | | |
| 22 | M.G.B. Software | Polonia | | |
| 23 | M.I. Turner and Son | Reino Unido | | |
| 24 | M.I. Turner and Son | Reino Unido | | |
| 25 | M.K. Circuits | Reino Unido | | |
| 26 | M.K. Circuits | Reino Unido | | |
| 27 | M.K.Circuits | | | |
| 28 | M.M.A Soft | Rusia | | |
| 29 | M.N. Soft | missing | | |
| 30 | M.R.Software | | | |
| 31 | M.W. Holman | | | |
| 32 | M.Z. Production | | | |
| 33 | Macbride | missing | | |
| 34 | Machinecraft Ltd | Reino Unido | | |
| 35 | Maciej Zielinski | | | |
| 36 | Macmillan Education Ltd | Reino Unido | | |
| 37 | Macmillan Publishers Ltd | | | |
| 38 | Macmillan Software Ltd | Macmillan Publishers Ltd | | |
| 39 | Macmillan Software Ltd | | | |
| 40 | Macronics Systems Ltd | Reino Unido | | |
| 41 | Macsen Software | Reino Unido | | |
| 42 | Macsoft | Reino Unido | | |
| 43 | MAD AXE (AndySoft) | | | |
| 44 | Mad Code Hacker Group | | | |
| 45 | Mad Code Hackers Group | | | |
| 46 | Made in Spain | missing | | |
| 47 | Made in Spain | | | |
| 48 | Madhouse | | | |
| 49 | MadMax [1] | missing | | |
| 50 | Madness Coders | | | |
| 51 | Madness Coders Group | | | |
| 52 | MADSOFT | | | |
| 53 | Maelstrom Games Ltd | Reino Unido | | |
| 54 | Maestro Group | | | |
| 55 | Mafia | | | |
| 56 | Mafia P.C. | Ucrania | | |
| 57 | Mafia Private Corporation | Ucrania | Kharkiv | |
| 58 | Maggisoft | | | |
| 59 | Magic | | | |
| 60 | Magic Bytes | Alemania | | |
| 61 | Magic Hand | España | | |
| 62 | Magic Moon | Ucrania | | |
| 63 | Magic Post Box | Reino Unido | | |
| 64 | Magic Realm Games | Reino Unido | | |
| 65 | Magic Soft | Rusia | Moscow | |
| 66 | Magic Soft [2] | Rusia | | |
| 67 | Magic Software | Reino Unido | | |
| 68 | Magic Studio | | | |
| 69 | Magic Team | Software Center S.A. | España | |
| 70 | MagicMaster Software | Rastislav Misecka | Eslovaquia | |
| 71 | Magicsoft [1] | Reino Unido | | |
| 72 | Magination Software | missing | | |
| 73 | Magination Software | Reino Unido | | |
| 74 | Magnetic Fields | Reino Unido | | |
| 75 | Magnetic Magazines Ltd | | | |
| 76 | Magnetic Monsters | Rusia | Sarapul | |
| 77 | Magnetic Scrolls Ltd | Reino Unido | | |
| 78 | Magnificent 7 Software | Reino Unido | | |
| 79 | Magnum Computing | Reino Unido | | |
| 80 | Magnum Computing | Reino Unido | | |
| 81 | Magnum Electronics | Reino Unido | | |
| 82 | Magnum Electronics | Reino Unido | | |
| 83 | Majasoft | República Checa | | |
| 84 | Major Developments | Reino Unido | | |
| 85 | MAK Computer Graphics | missing | | |
| 86 | Malan Associates | Reino Unido | | |
| 87 | Malcolm Kirk | Reino Unido | | |
| 88 | Maldon Archaeological Group | Reino Unido | | |
| 89 | Maldon Archaeological Group | Reino Unido | | |
| 90 | Malen Ltd | Rusia | Voronezh | |
| 91 | MaLINOWKA PRODUKTIONS | Rusia | Malinovka | |
| 92 | MALSoft | | | |
| 93 | Malva Ltd | Reino Unido | | |
| 94 | Mama Software | Alemania | | |
| 95 | Man Software | Cesar Hernandez Bano | España | |
| 96 | Mandala Breakers | República Checa | | |
| 97 | Mandarin Software | missing | | |
| 98 | Mandragora Software | España | | |
| 99 | Manfred Nolton | Alemania | | |
| 100 | Manic Miner Technologies | Noruega | | |
| 101 | Manic Miner Technologies | Noruega | | |
| 102 | Manjinder Rai | Manjinder Singh | | |
| 103 | Manjinder Singh | | | |
| 104 | Manor Software | Reino Unido | | |
| 105 | Manowar Software | Rusia | | |
| 106 | Mansfield Computers & Electronics | Reino Unido | | |
| 107 | Manuel Soft | República Checa | | |
| 108 | MAP Studio | Bielorrusia | Minsk | |
| 109 | Maparo Soft | Países Bajos | | |
| 110 | Mapasoft | Polonia | | |
| 111 | Mar Entertainment | España | | |
| 112 | MaRaf Software | | | |
| 113 | March Cats | Rusia | Ulyanovsk | |
| 114 | March Cats | Rusia | | |
| 115 | Mariano E.M. Chiaverano | Argentina | | |
| 116 | Marisoft | Italia | | |
| 117 | Mark Alexander | Reino Unido | | |
| 118 | Mark Cantrell | Reino Unido | | |
| 119 | Mark Foley | Irlanda | | |
| 120 | Mark Foley Productions | Mark Foley | Irlanda | |
| 121 | Mark Time Ltd | | | |
| 122 | Mark Time Ltd | Mark Alexander | Reino Unido | |
| 123 | Marks & Spencer | Reino Unido | | |
| 124 | Marks & Spencer | Reino Unido | | |
| 125 | Marksman Software | Reino Unido | | |
| 126 | Marlin Games | missing | | |
| 127 | Marmalade Software | Reino Unido | | |
| 128 | Marolli-Soft | Reino Unido | | |
| 129 | Marshall Cavendish Ltd | | | |
| 130 | Martech | Martech Games Ltd | Reino Unido | |
| 131 | Martech Games Ltd | Software Communications Ltd | Reino Unido | |
| 132 | Martech Games Ltd | Reino Unido | | |
| 133 | Martijn Groen | | | |
| 134 | Martin Dunitz Ltd | Reino Unido | | |
| 135 | Martin Freemantle | Reino Unido | | |
| 136 | Martin Hajduch | Eslovaquia | | |
| 137 | Martin Page | Reino Unido | | |
| 138 | Martin Vodicka | República Checa | | |
| 139 | Martinsoft | Reino Unido | | |
| 140 | Master Computer Company | | | |
| 141 | Master Copy Ltd | | | |
| 142 | Master HCG | | | |
| 143 | Master Home Computer Group | Rusia | Dzerzhinsk | |
| 144 | Master Home Computers Group | Rusia | Dzerzhinsk | |
| 145 | Master Software Ltd | | | |
| 146 | MasterCoder | | | |
| 147 | Masters Company Ltd | | | |
| 148 | Masters Games | missing | | |
| 149 | Masters Of Magic | | | |
| 150 | Masters of Memory | Rusia | Velikiy Novgorod | |
| 151 | Masters of the Universe | | | |
| 152 | Masters of the Universe | | | |
| 153 | Masters Of Universe | Polonia | | |
| 154 | Mastertronic Added Dimension | Titus | Francia | |
| 155 | Mastertronic Ltd | Titus | Francia | |
| 156 | Mastertronic Plus | Titus | Francia | |
| 157 | Mastervision | missing | | |
| 158 | Mastress Software | España | | |
| 159 | MastSoft | Ucrania | | |
| 160 | Matand Software | Reino Unido | | |
| 161 | Matand Software | missing | | |
| 162 | Matasoft | | | |
| 163 | Matasoft | Michal Matejka | | |
| 164 | Matlasoft | República Checa | | |
| 165 | Matra Computer Automations | España | | |
| 166 | Matrix Software | Reino Unido | | |
| 167 | Matt Neale | Reino Unido | | |
| 168 | Matt West | Reino Unido | | |
| 169 | Mattel Inc | Estados Unidos | | |
| 170 | Matthew Holmes | Reino Unido | | |
| 171 | Matthew Westcott | Reino Unido | | |
| 172 | Matthew Wilson | Reino Unido | | |
| 173 | Max Entertainment Inc. | Rusia | | |
| 174 | Max Ltd | | | |
| 175 | Maxisoft | Rusia | | |
| 176 | Maxsoft&Stars of Keladan | | | |
| 177 | Maxware Corp. | Rusia | | |
| 178 | Maxware Group | Rusia | | |
| 179 | Maxwell Technology Ltd | Reino Unido | | |
| 180 | Mayday Software | Reino Unido | | |
| 181 | Mayfield Products | Reino Unido | | |
| 182 | Mayfield Products | Reino Unido | | |
| 183 | Mayhem | Rusia | Tula | |
| 184 | Maynard International Ltd | | | |
| 185 | MB Maniax | República Checa | Prague | |
| 186 | mborik | | | |
| 187 | MBs Group | Bielorrusia | Gomel | |
| 188 | MC Breakers | | | |
| 189 | MC Lothlorien | | | |
| 190 | MC Lothlorien Ltd | Icon Design Ltd | Reino Unido | |
| 191 | MC Lothlorien Ltd | Reino Unido | | |
| 192 | MC Microcomputer | Italia | | |
| 193 | MC Microcomputer | Italia | | |
| 194 | MCC | Monaco Computing Corporation | | |
| 195 | McGraw-Hill Book Company UK Ltd | Reino Unido | | |
| 196 | MCI Iberica S.A. | España | | |
| 197 | McLoughlin & Co | Reino Unido | | |
| 198 | McLoughlin & Co | Reino Unido | | |
| 199 | MCM Software S.A. | missing | | |
| 200 | MCN Software [1] | Países Bajos | | |
| 201 | MCN Software [2] | Reino Unido | | |
| 202 | McNeil Software | Reino Unido | | |
| 203 | MCP Co | Reino Unido | | |
| 204 | MCR69 Software | | | |
| 205 | MD Software | Vivid Image | Reino Unido | |
| 206 | MD Software | | | |
| 207 | MDA Modon Associates Ltd | Reino Unido | | |
| 208 | MDR | Reino Unido | | |
| 209 | Meadowmarsh Software | Reino Unido | | |
| 210 | Meastrosoft | Reino Unido | | |
| 211 | Mediandroid | Reino Unido | | |
| 212 | Medsoft | Reino Unido | | |
| 213 | Mega | | | |
| 214 | Mega Byte | | | |
| 215 | Mega Byte Group | Rusia | Krasnodar | |
| 216 | Mega Center Group | Rusia | Goriachi Kliuch | |
| 217 | Mega-Soft [2] | Reino Unido | | |
| 218 | Megabaund Hackers Club | Rusia | Kirov | |
| 219 | Megacode | Rusia | Vladimir | |
| 220 | Megacode | | | |
| 221 | Megacode Hackers Group | Rusia | | |
| 222 | Megacode Hackers Group | Rusia | | |
| 223 | MegaDate Group | Rusia | Moscow | |
| 224 | Megadodo Software | Reino Unido | | |
| 225 | Megaforce Group | Rusia | Moscow | |
| 226 | Megaforce Hackers Group | Rusia | Moscow | |
| 227 | Megapoints Corner | Reino Unido | | |
| 228 | Megasoft [1] | missing | | |
| 229 | Megasoft [3] | Bosnia | | |
| 230 | Megasoft [4] | missing | | |
| 231 | Megasoft [5] | Rusia | | |
| 232 | Megasportz | Beyond Belief | Reino Unido | |
| 233 | MegaStars Hackers Group | Rusia | Kurgan | |
| 234 | Megasystem Group | Rusia | Moscow | |
| 235 | Mel Croucher | Reino Unido | | |
| 236 | Melbourne House | Melbourne House Publishers Ltd | | |
| 237 | Melbourne House | Australia | | |
| 238 | Melbourne House Publishers Ltd | | | |
| 239 | Melbourne House-88 | | | |
| 240 | Memoco Electron | Reino Unido | | |
| 241 | Memotronic | Alemania | | |
| 242 | Memotronic | Alemania | | |
| 243 | Mental Images | Reino Unido | | |
| 244 | Mental Images | Reino Unido | | |
| 245 | Mental Inspiration Unity | Rusia | Apatity | |
| 246 | Mental Inspiration Unity | Rusia | | |
| 247 | Mentor Software | Reino Unido | | |
| 248 | Meow Micros | Reino Unido | | |
| 249 | Mercurian Pulp Products | Reino Unido | | |
| 250 | Mercury Software | Reino Unido | | |
| 251 | Merimpex Ltd | | | |
| 252 | Merlin Software | Rusia | Tula | |
| 253 | Merlin Software [1] | Reino Unido | | |
| 254 | Merlin Software [2] | Rusia | | |
| 255 | Merry Life-Hackers Famely | Rusia | Miass | |
| 256 | Mesoft | Reino Unido | | |
| 257 | Metal Militia Group | Rusia | Goriachi Kliuch | |
| 258 | Metal Soft | Argentina | | |
| 259 | Metempsychosis | | | |
| 260 | Methodia Design Norway | Noruega | | |
| 261 | MFM Data Services Ltd | Reino Unido | | |
| 262 | MG & Co | Mr.Gluk & Co | Rusia | Ivanovo |
| 263 | MGN Group | Rusia | | |
| 264 | MGS Software | República Checa | | |
| 265 | MGSoft | Brasil | | |
| 266 | mHm | Rusia | | |
| 267 | MHS Muller Hard & Software | Alemania | | |
| 268 | MHS Muller Hard & Software | Alemania | | |
| 269 | MHT Ingenieros S.L. | España | | |
| 270 | MI & DI Ltd Software | Rusia | | |
| 271 | MI & DI Ltd Software | Rusia | | |
| 272 | MI&DI Ltd | | | |
| 273 | MI&DI Ltd. | | | |
| 274 | MI-Soft [1] | Reino Unido | | |
| 275 | Miami-Soft | Eslovaquia | | |
| 276 | MiC Software | Polonia | | |
| 277 | Michael Batty | Reino Unido | | |
| 278 | Michael Bellamy | Reino Unido | | |
| 279 | Michael Orwin | | | |
| 280 | Michael Slatford | Reino Unido | | |
| 281 | Michael Slatford Software | missing | | |
| 282 | Michal Matejka | | | |
| 283 | Michal Polak | República Checa | | |
| 284 | Micro Accessories | Reino Unido | | |
| 285 | Micro Adventurer | Sunshine Books Ltd | Reino Unido | |
| 286 | Micro ART | Rusia | | |
| 287 | Micro Computer Software | | | |
| 288 | Micro Connection | Países Bajos | | |
| 289 | Micro Data | Italia | | |
| 290 | Micro Gold | missing | | |
| 291 | Micro House | Uruguay | | |
| 292 | Micro Investor Software | Reino Unido | | |
| 293 | Micro Kid | Reino Unido | | |
| 294 | Micro Limit | Suecia | | |
| 295 | Micro Master | missing | | |
| 296 | Micro Power Ltd | Reino Unido | | |
| 297 | Micro Press [1] | Reino Unido | | |
| 298 | Micro Sistemas | Brasil | | |
| 299 | Micro Style | | | |
| 300 | Micro Style | missing | | |
| 301 | Micro Style-90 | | | |
| 302 | Micro Value | Tynesoft | Reino Unido | |
| 303 | Micro Wares | Computer Wares | Reino Unido | |
| 304 | Micro World | España | | |
| 305 | Micro Zeighty | Reino Unido | | |
| 306 | Micro-Bit Software | España | | |
| 307 | Micro-De-Bug Consultancy | Reino Unido | | |
| 308 | Micro-Kraft | Reino Unido | | |
| 309 | Micro-Mart Software | Reino Unido | | |
| 310 | Micro-Partner | Alemania | | |
| 311 | Micro-Source | Países Bajos | | |
| 312 | Micro-Spot | España | | |
| 313 | Microamigo S.A. | | | |
| 314 | Microbyte [1] | Microbyte S.A. | | |
| 315 | Microbyte [2] | Reino Unido | | |
| 316 | Microbyte S.A. | | | |
| 317 | Microbyte Software [1] | España | | |
| 318 | Microbyte Software [2] | Portugal | | |
| 319 | Microcell Computer Systems | | | |
| 320 | Microdeal | Reino Unido | | |
| 321 | Microdigital | Microdigital Eletronica Ltda | Brasil | |
| 322 | Microdigital Eletronica Ltda | Brasil | | |
| 323 | Microdigital Soft S.A. | España | | |
| 324 | Microdot Software | Reino Unido | | |
| 325 | Microelectronics Education Programme | Tecmedia | Reino Unido | |
| 326 | Microfayre | Reino Unido | | |
| 327 | Microgame Simulations | Reino Unido | | |
| 328 | MicroHobby | Hobby Press S.A. | España | |
| 329 | MicroHobby Especial | Hobby Press S.A. | España | |
| 330 | Microholics Anonymous | Reino Unido | | |
| 331 | Microids | Francia | | |
| 332 | MiCROL | Reino Unido | | |
| 333 | Micromania | missing | | |
| 334 | Micromania [2] | Hobby Press S.A. | España | |
| 335 | Micromega | Reino Unido | | |
| 336 | Micronet 800 Telesoftware | Reino Unido | | |
| 337 | Microparadise Software | MicroWorld S.A. | | |
| 338 | Micropress [2] | Países Bajos | | |
| 339 | Microprose | | | |
| 340 | MicroProse Software Ltd | | | |
| 341 | MicroProse Software Ltd | Atari Inc | Reino Unido | |
| 342 | Microscreen Software | | | |
| 343 | Microsphere | Microsphere Computer Services Ltd | | |
| 344 | Microsphere Computer Services Ltd | | | |
| 345 | Microtax Ltd | Reino Unido | | |
| 346 | Microtech | | | |
| 347 | Microtech Systems [1] | Reino Unido | | |
| 348 | Microtech Systems [1] | Reino Unido | | |
| 349 | Microtech Systems [2] | Eslovaquia | | |
| 350 | Microtrust Software | Reino Unido | | |
| 351 | Microware | missing | | |
| 352 | Microworkshops Ltd | Reino Unido | | |
| 353 | MicroWorld S.A. | | | |
| 354 | Midi Group | | | |
| 355 | Midisoft [1] | Reino Unido | | |
| 356 | Midisoft [2] | Rusia | | |
| 357 | Midnight Group | Rusia | Novorossiysk | |
| 358 | Miguel Angel Montejo Raez | España | | |
| 359 | Mihip | | | |
| 360 | Mike Hampson | Reino Unido | | |
| 361 | Mike Marchant Graphics | Reino Unido | | |
| 362 | Mike White | Reino Unido | | |
| 363 | MIKRO | Dinamarca | | |
| 364 | Mikro+Kleincomputer Informa Verlag AG | Alemania | | |
| 365 | Mikro-Gen Ltd | Reino Unido | | |
| 366 | Mild Group | Rusia | Yoshkar-Ola | |
| 367 | Mild Soft | Rusia | | |
| 368 | Mild Software | Bielorrusia | Minsk | |
| 369 | Miles Gordon Technology | Reino Unido | | |
| 370 | Millansoft | España | | |
| 371 | Millenium Software | Reino Unido | | |
| 372 | Millside Software | Reino Unido | | |
| 373 | Millsoft | Reino Unido | | |
| 374 | MilousSoft | República Checa | | |
| 375 | Milytia | Rusia | Izhevsk | |
| 376 | Minatron Computing | Reino Unido | | |
| 377 | Mind | | | |
| 378 | Mind Games | | | |
| 379 | Mind Games | missing | | |
| 380 | Mind Games Espana | | | |
| 381 | Mind Games Espana S.A. | España | | |
| 382 | Mind's Eye | | | |
| 383 | Mind's Eye Software | Reino Unido | | |
| 384 | Mind's Eye Software | Reino Unido | | |
| 385 | Mind's Eye Software | | | |
| 386 | Mindgames | | | |
| 387 | Minds Eye | | | |
| 388 | Mindscape | | | |
| 389 | Mindscape International Inc | Reino Unido | | |
| 390 | Mine of Information Ltd | | | |
| 391 | Minicom Soft | Reino Unido | | |
| 392 | Minimal Systems | Reino Unido | | |
| 393 | minimalartifact | | | |
| 394 | Minimicro Software | Reino Unido | | |
| 395 | Minisoft | Bielorrusia | | |
| 396 | MIPh and T Hacker Club | Rusia | Moscow | |
| 397 | MIPh&T Hacker Club | Rusia | Moscow | |
| 398 | MiPH&T Hackers Club | Rusia | | |
| 399 | MiPH&T Hackers Club | Rusia | | |
| 400 | MiPH&T Hackers Club | Rusia | | |
| 401 | Mira Software | Reino Unido | | |
| 402 | Miracle Games | missing | | |
| 403 | Miracle Technology UK Ltd | Reino Unido | | |
| 404 | Mirage Software | Reino Unido | | |
| 405 | Miratec Systems | Reino Unido | | |
| 406 | Mirko Monninghoff | Alemania | | |
| 407 | Miroslav Fidler | República Checa | | |
| 408 | Mirror | | | |
| 409 | Mirrorsoft Ltd | Reino Unido | | |
| 410 | Mirrorsoft Ltd-86 | | | |
| 411 | Misha Pertsovsky | | | |
| 412 | Misoft [2] | Reino Unido | | |
| 413 | Mission Software | Reino Unido | | |
| 414 | MISTER BEEP | Polonia | | |
| 415 | Mister Chip | Software Micro Chip S.L. | | |
| 416 | Mistika Ltd | | | |
| 417 | Mistral Software | Reino Unido | | |
| 418 | Mitchell | Mitchell Corporation | | |
| 419 | Mitchell Corporation | | | |
| 420 | Mitchell Software Ltd | Robin Clive Mitchell | Reino Unido | |
| 421 | Miva Rafii | Polonia | | |
| 422 | Mix Soft | Rusia | | |
| 423 | Mixt | | | |
| 424 | Mixt Dimension | España | | |
| 425 | Mizar | | | |
| 426 | Mizar Computing | Reino Unido | | |
| 427 | Mizar Computing | Reino Unido | | |
| 428 | MKSoft Ltd | missing | | |
| 429 | ML Group | Rusia | Novocheboksarsk | |
| 430 | mma | | | |
| 431 | MMCG | | | |
| 432 | Mme Sosostris | Reino Unido | | |
| 433 | Mme Sosostris Astro Computing | Reino Unido | | |
| 434 | Mme Sosostris Astro Computing | Reino Unido | | |
| 435 | MMM Group | | | |
| 436 | MNEMOtech | | | |
| 437 | MNL Software | Reino Unido | | |
| 438 | Moderation | Rusia | Neftekamsk | |
| 439 | Modular Resources Ltd | Reino Unido | | |
| 440 | Mogul Communications Ltd | Reino Unido | | |
| 441 | MoI | Mine of Information Ltd | | |
| 442 | Moj Mikro | Eslovenia | | |
| 443 | Mojon Twins | | | |
| 444 | Mojon Twins;Jarlaxe | | | |
| 445 | Mole Software | Reino Unido | | |
| 446 | Moment Records | Rusia | | |
| 447 | Monaco Computing Corporation | | | |
| 448 | Monea Software | missing | | |
| 449 | Monflair Ltd | Reino Unido | | |
| 450 | Monk Soft | missing | | |
| 451 | Mono Soft | missing | | |
| 452 | Monolith | missing | | |
| 453 | Monser S.A. | España | | |
| 454 | Monster's Legs Productions | Kevin McGrorty | Reino Unido | |
| 455 | Monster's Legs Productions | missing | | |
| 456 | Monsterbytes | missing | | |
| 457 | Monsters Productions | | | |
| 458 | Montevideo Uruguay | Uruguay | | |
| 459 | Monument Microgames | | | |
| 460 | Moonchild Software | missing | | |
| 461 | Moonsoft | Rusia | Korkino | |
| 462 | Moonstone | Reino Unido | | |
| 463 | Moonstone Computing | Reino Unido | | |
| 464 | Morbosoft | España | | |
| 465 | Morex Peripherals Ltd | Abbeydale Designers Ltd | Reino Unido | |
| 466 | Morley Davies Associates | Reino Unido | | |
| 467 | Morpheus Games | Reino Unido | | |
| 468 | Morrisons | Wm Morrison Supermarkets PLC | | |
| 469 | Morsoft | Reino Unido | | |
| 470 | Mortal Kombat Hackers Group | Rusia | Moscow | |
| 471 | Mosaic Publishing Ltd | Reino Unido | | |
| 472 | Motivation Software | Alec Carswell | Reino Unido | |
| 473 | Moy Gorod | | | |
| 474 | MPF Software | Rusia | | |
| 475 | MPS Group | Rusia | Moscow | |
| 476 | MQM Team | República Checa | Brno | |
| 477 | MQM Team | República Checa | | |
| 478 | Mr Byte Software | Italia | | |
| 479 | Mr Gluk & Company | Mr.Gluk & Co | Rusia | Ivanovo |
| 480 | Mr Incognito | | | |
| 481 | Mr. Chip Software | Magnetic Fields | Reino Unido | |
| 482 | Mr. Johny Renegade | | | |
| 483 | Mr. Ltd | Rusia | | |
| 484 | Mr. Micro | | | |
| 485 | Mr. Micro Ltd | | | |
| 486 | Mr. Micro Ltd | Handmade Software Ltd | | |
| 487 | Mr. Mikro | | | |
| 488 | Mr. Scrololo | | | |
| 489 | Mr.Gluk & Co | Rusia | Ivanovo | |
| 490 | MRP-SBS Software | Reino Unido | | |
| 491 | MRSoft | República Checa | | |
| 492 | MS Software | Alemania | | |
| 493 | MS-CID | República Checa | | |
| 494 | MSA Crew | Ucrania | Odessa | |
| 495 | MSD | Rusia | Ufa | |
| 496 | MSD Group | Rusia | | |
| 497 | MSD Group | Rusia | | |
| 498 | Msoft | Reino Unido | | |
| 499 | MSoftware | | | |
| 500 | MST Consultants | Reino Unido | | |
| 501 | MST Consultants | Reino Unido | | |
| 502 | Mugen Group | Rusia | Petrozavodsk | |
| 503 | Multi-Soft Games | Reino Unido | | |
| 504 | Multi-Soft Games | Reino Unido | | |
| 505 | Multisoft | Alemania | | |
| 506 | Multisoft Informatica Ltda | Brasil | | |
| 507 | Multyplex | | | |
| 508 | Multyplex Group | Rusia | | |
| 509 | Multyplex Group | Rusia | | |
| 510 | Munning Games | Reino Unido | | |
| 511 | Munning Games | Reino Unido | | |
| 512 | Mushroomsoft | Reino Unido | | |
| 513 | Music Soft | España | | |
| 514 | Musical 1 S.A. | España | | |
| 515 | Musical Muntaner S.A. | | | |
| 516 | Musicsoft | Rusia | Moscow | |
| 517 | MW Gamesworld | Reino Unido | | |
| 518 | MW Gamesworld | Reino Unido | | |
| 519 | MW Software | Reino Unido | | |
| 520 | Mxxoft | Polonia | | |
| 521 | My Cat Software | | | |
| 522 | Myrmidon Software | Reino Unido | | |
| 523 | Mystery Software | Reino Unido | | |
| 524 | Mystic Code Group | | | |
| 525 | Mystic Software | Reino Unido | | |
| 526 | Myth Corp | | | |
| 527 | Mythos Games Ltd | Reino Unido | | |
| 528 | Mythsoft | Reino Unido | | |
| 529 | Маршрут на Юпитер | Ucrania | Sinelnikovo | |
