| 1 | M Meerman Design | | | |
| 2 | M&H Software | Reino Unido | | |
| 3 | M&J Regan Software | Reino Unido | | |
| 4 | M&J Software | Reino Unido | | |
| 5 | M. Angel Rios Domingo | España | | |
| 6 | M. Gerhard | | | |
| 7 | M.42 Software | | Neil Talbott | | | | |
| 8 | M.A. Lovell | Reino Unido | | |
| 9 | M.A. Lovell Software | | M.A. Lovell | | | | |
| 10 | M.A. Smith | Reino Unido | | |
| 11 | M.A.P. Publications | | | |
| 12 | M.A.P. Software | | M.A.P. Publications | | | | |
| 13 | M.B. Software | Reino Unido | | |
| 14 | M.E.L. Chip Club | Croatia | | |
| 15 | M.G.B. Software | Poland | | |
| 16 | M.I. Turner and Son | Reino Unido | | |
| 17 | M.K. Circuits | Reino Unido | | |
| 18 | M.M.A Soft | Russia | | |
| 19 | M.N. Soft |
| 20 | M.R.Software | | | |
| 21 | M.W. Holman | | | |
| 22 | M.Z. Production | | | |
| 23 | Macbride |
| 24 | Machinecraft Ltd | Reino Unido | | |
| 25 | Macmillan Publishers Ltd | | | |
| 26 | Macmillan Software Ltd | | Macmillan Publishers Ltd | | | | |
| 27 | Macronics Systems Ltd | Reino Unido | | |
| 28 | Macsen Software | Reino Unido | | |
| 29 | Macsoft | Reino Unido | | |
| 30 | Made in Spain | | Zigurat Software | | | | |
| 31 | MadMax [1] |
| 32 | MADSOFT | | | |
| 33 | Maelstrom Games Ltd | Reino Unido | | |
| 34 | Mafia Private Corporation | Ukraine | Kharkiv |  |
| 35 | Maggisoft | | | |
| 36 | Magic Bytes | Germany | | |
| 37 | Magic Hand | España | | |
| 38 | Magic Moon | Ukraine | | |
| 39 | Magic Post Box | Reino Unido | | |
| 40 | Magic Realm Games | Reino Unido | | |
| 41 | Magic Soft | Russia | Moscow | |
| 42 | Magic Soft [2] | Russia | | |
| 43 | Magic Software | Reino Unido | | |
| 44 | Magic Team | | Software Center S.A. | | | | |
| 45 | MagicMaster Software | | Rastislav Misecka | | | | |
| 46 | Magicsoft [1] | Reino Unido | | |
| 47 | Magination Software | Reino Unido | | |
| 48 | Magnetic Fields | Reino Unido | | |
| 49 | Magnetic Magazines Ltd | | | |
| 50 | Magnetic Monsters | Russia | Сарапул | |
| 51 | Magnetic Scrolls Ltd | Reino Unido | | |
| 52 | Magnificent 7 Software | Reino Unido | | |
| 53 | Magnum Computing | Reino Unido | | |
| 54 | Magnum Electronics | Reino Unido | | |
| 55 | Majasoft | República Checa | | |
| 56 | Major Developments | Reino Unido | | |
| 57 | MAK Computer Graphics |
| 58 | Malan Associates | Reino Unido | | |
| 59 | Malcolm Kirk | Reino Unido | | |
| 60 | Maldon Archaeological Group | Reino Unido | | |
| 61 | MaLINOWKA PRODUKTIONS | Russia | Малиновка | |
| 62 | MALSoft | | | |
| 63 | Malva Ltd | Reino Unido | | |
| 64 | Mama Software | Germany | | |
| 65 | Man Software | | Cesar Hernandez Bano | | | | |
| 66 | Mandala Breakers | República Checa | | |
| 67 | Mandarin Software | | Database Publications Ltd | | | | |
| 68 | Mandragora Software | España | | |
| 69 | Manfred Nolton | Germany | | |
| 70 | Manic Miner Technologies | Norway | | |
| 71 | Manjinder Rai | | Manjinder Singh | | | | |
| 72 | Manjinder Singh | | | |
| 73 | Manor Software | Reino Unido | | |
| 74 | Manowar Software | Russia | | |
| 75 | Mansfield Computers & Electronics | Reino Unido | | |
| 76 | Manuel Soft | República Checa | | |
| 77 | Maparo Soft | Netherlands | | |
| 78 | Mapasoft | Poland | | |
| 79 | Mar Entertainment | España | | |
| 80 | MaRaf Software | | | |
| 81 | March Cats | Russia | Ульяновск | |
| 82 | Mariano E.M. Chiaverano | Argentina | | |
| 83 | Marisoft | Italy | | |
| 84 | Mark Alexander | Reino Unido | | |
| 85 | Mark Cantrell | Reino Unido | | |
| 86 | Mark Foley | Ireland | | |
| 87 | Mark Foley Productions | | Mark Foley | | | | |
| 88 | Mark Time Ltd | | Mark Alexander | | | | |
| 89 | Marks & Spencer | Reino Unido | | |
| 90 | Marksman Software | Reino Unido | | |
| 91 | Marlin Games |
| 92 | Marmalade Software | Reino Unido | | |
| 93 | Marolli-Soft | Reino Unido | | |
| 94 | Marshall Cavendish Ltd | | | |
| 95 | Martech Games Ltd | | Software Communications Ltd | | | | |
| 96 | Martin Dunitz Ltd | Reino Unido | | |
| 97 | Martin Freemantle | Reino Unido | | |
| 98 | Martin Hajduch | Slovakia | | |
| 99 | Martin Page | Reino Unido | | |
| 100 | Martin Vodicka | República Checa | | |
| 101 | Martinsoft | Reino Unido | | |
| 102 | Master Home Computer Group | Russia | Дзержинск | |
| 103 | Master Home Computers Group | Russia | Дзержинск | |
| 104 | Masters Games |
| 105 | Masters of Memory | Russia | Velikiy Novgorod | |
| 106 | Masters of the Universe | | | |
| 107 | Mastertronic Added Dimension | | Mastertronic Ltd | | | | |
| 108 | Mastertronic Ltd | | Titus | | | | |
| 109 | Mastertronic Plus | | Mastertronic Ltd | | | | |
| 110 | Mastervision | | Mastertronic Ltd | | | | |
| 111 | Mastress Software | España | | |
| 112 | MastSoft | Ukraine | | |
| 113 | Matand Software |
| 114 | Matasoft | | Michal Matejka | | | | |
| 115 | Matlasoft | República Checa | | |
| 116 | Matra Computer Automations | España | | |
| 117 | Matrix Software | Reino Unido | | |
| 118 | Matt Neale | Reino Unido | | |
| 119 | Matt West | Reino Unido | | |
| 120 | Mattel Inc | Estados Unidos | | |
| 121 | Matthew Holmes | Reino Unido | | |
| 122 | Matthew Westcott | Reino Unido | | |
| 123 | Matthew Wilson | Reino Unido | | |
| 124 | Max Entertainment Inc. | Russia | | |
| 125 | Maxisoft | Russia | | |
| 126 | Maxware Corp. | Russia | | |
| 127 | Maxware Group | Russia | | |
| 128 | Maxwell Technology Ltd | Reino Unido | | |
| 129 | Mayday Software | Reino Unido | | |
| 130 | Mayfield Products | Reino Unido | | |
| 131 | Mayhem | Russia | Тула | |
| 132 | Maynard International Ltd | | | |
| 133 | MB Maniax | República Checa | Прага | |
| 134 | MBs Group | Belarus | Гомель | |
| 135 | MC Breakers | | | |
| 136 | MC Lothlorien Ltd | | Icon Design Ltd | | | | |
| 137 | MC Microcomputer | Italy | | |
| 138 | MCC | | Monaco Computing Corporation | | | | |
| 139 | McGraw-Hill Book Company UK Ltd | Reino Unido | | |
| 140 | MCI Iberica S.A. | España | | |
| 141 | McLoughlin & Co | Reino Unido | | |
| 142 | MCM Software S.A. | | Erbe Software S.A. | | | | |
| 143 | MCN Software [1] | Netherlands | | |
| 144 | MCN Software [2] | Reino Unido | | |
| 145 | McNeil Software | Reino Unido | | |
| 146 | MCP Co | Reino Unido | | |
| 147 | MCR69 Software | | | |
| 148 | MD Software | | | |
| 149 | MD Software | | Vivid Image | | | | |
| 150 | MDA Modon Associates Ltd | Reino Unido | | |
| 151 | MDR | Reino Unido | | |
| 152 | Meadowmarsh Software | Reino Unido | | |
| 153 | Meastrosoft | Reino Unido | | |
| 154 | Mediandroid | Reino Unido | | |
| 155 | Medsoft | Reino Unido | | |
| 156 | Mega-Soft [2] | Reino Unido | | |
| 157 | Megacode | Russia | Владимир | |
| 158 | Megacode Hackers Group | Russia | | |
| 159 | MegaDate Group | Russia | Moscow | |
| 160 | Megadodo Software | Reino Unido | | |
| 161 | Megaforce Hackers Group | Russia | Moscow | |
| 162 | Megapoints Corner | Reino Unido | | |
| 163 | Megasoft [1] |
| 164 | Megasoft [3] | Bosnia | | |
| 165 | Megasoft [4] |
| 166 | Megasoft [5] | Russia | | |
| 167 | Megasportz | | Beyond Belief | | | | |
| 168 | Megasystem Group | Russia | Moscow | |
| 169 | Mel Croucher | Reino Unido | | |
| 170 | Melbourne House | | Melbourne House Publishers Ltd | | | | |
| 171 | Melbourne House Publishers Ltd | | | |
| 172 | Memoco Electron | Reino Unido | | |
| 173 | Memotronic | Germany | | |
| 174 | Mental Images | Reino Unido | | |
| 175 | Mental Inspiration Unity | Russia | Апатиты | |
| 176 | Mentor Software | Reino Unido | | |
| 177 | Meow Micros | Reino Unido | | |
| 178 | Mercurian Pulp Products | Reino Unido | | |
| 179 | Mercury Software | Reino Unido | | |
| 180 | Merimpex Ltd | | | |
| 181 | Merlin Software [1] | Reino Unido | | |
| 182 | Merlin Software [2] | Russia | | |
| 183 | Mesoft | Reino Unido | | |
| 184 | Metal Soft | Argentina | | |
| 185 | Methodia Design Norway | Norway | | |
| 186 | MFM Data Services Ltd | Reino Unido | | |
| 187 | MG & Co | Russia | | |
| 188 | MGN Group | Russia | | |
| 189 | MGS Software | República Checa | | |
| 190 | MGSoft | Brazil | | |
| 191 | MHS Muller Hard & Software | Germany | | |
| 192 | MHT Ingenieros S.L. | España | | |
| 193 | MI & DI Ltd Software | Russia | | |
| 194 | MI-Soft [1] | Reino Unido | | |
| 195 | MIA Soft | Russia | | |
| 196 | Miami-Soft | Slovakia | | |
| 197 | MiC Software | Poland | | |
| 198 | Michael Batty | Reino Unido | | |
| 199 | Michael Bellamy | Reino Unido | | |
| 200 | Michael Orwin | | | |
| 201 | Michael Slatford | Reino Unido | | |
| 202 | Michael Slatford Software |
| 203 | Michal Matejka | | | |
| 204 | Michal Polak | República Checa | | |
| 205 | Micro Accessories | Reino Unido | | |
| 206 | Micro Adventurer | | Sunshine Books Ltd | | | | |
| 207 | Micro ART | Russia | | |
| 208 | Micro Computer Software | | | |
| 209 | Micro Connection | Netherlands | | |
| 210 | Micro Data | Italy | | |
| 211 | Micro Gold |
| 212 | Micro House | Uruguay | | |
| 213 | Micro Investor Software | Reino Unido | | |
| 214 | Micro Kid | Reino Unido | | |
| 215 | Micro Limit | Sweden | | |
| 216 | Micro Master |
| 217 | Micro Power Ltd | Reino Unido | | |
| 218 | Micro Press [1] | Reino Unido | | |
| 219 | Micro Sistemas | Brazil | | |
| 220 | Micro Style | | MicroProse Software Ltd | | | | |
| 221 | Micro Value | | Tynesoft | | | | |
| 222 | Micro Wares | | Computer Wares | | | | |
| 223 | Micro World | España | | |
| 224 | Micro Zeighty | Reino Unido | | |
| 225 | Micro-Bit Software | España | | |
| 226 | Micro-De-Bug Consultancy | Reino Unido | | |
| 227 | Micro-Kraft | Reino Unido | | |
| 228 | Micro-Mart Software | Reino Unido | | |
| 229 | Micro-Partner | Germany | | |
| 230 | Micro-Source | Netherlands | | |
| 231 | Micro-Spot | España | | |
| 232 | Microamigo S.A. | | | |
| 233 | Microbyte [1] | | Microbyte S.A. | | | | |
| 234 | Microbyte [2] | Reino Unido | | |
| 235 | Microbyte S.A. | | | |
| 236 | Microbyte Software [1] | España | | |
| 237 | Microbyte Software [2] | Portugal | | |
| 238 | Microcell Computer Systems | | | |
| 239 | Microdeal | Reino Unido | | |
| 240 | Microdigital | | Microdigital Eletronica Ltda | | | | |
| 241 | Microdigital Eletronica Ltda | Brazil | | |
| 242 | Microdigital Soft S.A. | | | |
| 243 | Microdot Software | Reino Unido | | |
| 244 | Microelectronics Education Programme | | Tecmedia | | | | |
| 245 | Microfayre | Reino Unido | | |
| 246 | Microgame Simulations | Reino Unido | | |
| 247 | MicroHobby | | Hobby Press S.A. | | | | |
| 248 | MicroHobby Especial | | Hobby Press S.A. | | | | |
| 249 | Microholics Anonymous | Reino Unido | | |
| 250 | Microids | France | | |
| 251 | MiCROL | Reino Unido | | |
| 252 | Micromania |
| 253 | Micromania [2] | | Hobby Press S.A. | | | | |
| 254 | Micromega | Reino Unido | | |
| 255 | Micronet 800 Telesoftware | Reino Unido | | |
| 256 | Microparadise Software | | MicroWorld S.A. | | | | |
| 257 | Micropress [2] | Netherlands | | |
| 258 | MicroProse Software Ltd | | Atari Inc | | | | |
| 259 | Microscreen Software | | | |
| 260 | Microsphere | | Microsphere Computer Services Ltd | | | | |
| 261 | Microsphere Computer Services Ltd | | | |
| 262 | Microtax Ltd | Reino Unido | | |
| 263 | Microtech Systems [1] | Reino Unido | | |
| 264 | Microtech Systems [2] | Slovakia | | |
| 265 | Microtrust Software | Reino Unido | | |
| 266 | Microware |
| 267 | Microworkshops Ltd | Reino Unido | | |
| 268 | MicroWorld S.A. | | | |
| 269 | Midisoft [1] | Reino Unido | | |
| 270 | Midisoft [2] | Russia | | |
| 271 | Midnight Group | Russia | Новороссийск | |
| 272 | Miguel Angel Montejo Raez | España | | |
| 273 | Mike Hampson | Reino Unido | | |
| 274 | Mike Marchant Graphics | Reino Unido | | |
| 275 | Mike White | Reino Unido | | |
| 276 | MIKRO | Denmark | | |
| 277 | Mikro+Kleincomputer Informa Verlag AG | Germany | | |
| 278 | Mikro-Gen Ltd | Reino Unido | | |
| 279 | Mild Group | Russia | Йошкар-Ола | |
| 280 | Mild Soft | Russia | | |
| 281 | Miles Gordon Technology | Reino Unido | | |
| 282 | Millansoft | España | | |
| 283 | Millenium Software | Reino Unido | | |
| 284 | Millside Software | Reino Unido | | |
| 285 | Millsoft | Reino Unido | | |
| 286 | MilousSoft | República Checa | | |
| 287 | Milytia | Russia | Ижевск | |
| 288 | Minatron Computing | Reino Unido | | |
| 289 | Mind Games | | Argus Press Software Ltd | | | | |
| 290 | Mind Games Espana S.A. | España | | |
| 291 | Mind's Eye Software | Reino Unido | | |
| 292 | Mindscape International Inc | Reino Unido | | |
| 293 | Mine of Information Ltd | | | |
| 294 | Minicom Soft | Reino Unido | | |
| 295 | Minimal Systems | Reino Unido | | |
| 296 | Minimicro Software | Reino Unido | | |
| 297 | Minisoft | Belarus | | |
| 298 | MiPH&T Hackers Club | Russia | | |
| 299 | Mira Software | Reino Unido | | |
| 300 | Miracle Games |
| 301 | Miracle Technology UK Ltd | Reino Unido | | |
| 302 | Mirage Software | Reino Unido | | |
| 303 | Miratec Systems | Reino Unido | | |
| 304 | Mirko Monninghoff | Germany | | |
| 305 | Miroslav Fidler | República Checa | | |
| 306 | Mirrorsoft Ltd | Reino Unido | | |
| 307 | Misoft [2] | Reino Unido | | |
| 308 | Mission Software | Reino Unido | | |
| 309 | Mister Chip | | Software Micro Chip S.L. | | | | |
| 310 | Mistral Software | Reino Unido | | |
| 311 | Mitchell | | Mitchell Corporation | | | | |
| 312 | Mitchell Corporation | | | |
| 313 | Mitchell Software Ltd | | Robin Clive Mitchell | | | | |
| 314 | Miva Rafii | Poland | | |
| 315 | Mix Soft | Russia | | |
| 316 | Mixt Dimension | España | | |
| 317 | Mizar Computing | Reino Unido | | |
| 318 | MKSoft Ltd |
| 319 | MMCG | | | |
| 320 | Mme Sosostris Astro Computing | Reino Unido | | |
| 321 | MNL Software | Reino Unido | | |
| 322 | Moderation | Russia | Neftekamsk | |
| 323 | Modular Resources Ltd | Reino Unido | | |
| 324 | Mogul Communications Ltd | Reino Unido | | |
| 325 | MoI | | Mine of Information Ltd | | | | |
| 326 | Moj Mikro | Slovenia | | |
| 327 | Mole Software | Reino Unido | | |
| 328 | Moment Records | Russia | | |
| 329 | Monaco Computing Corporation | | | |
| 330 | Monea Software |
| 331 | Monflair Ltd | Reino Unido | | |
| 332 | Monk Soft |
| 333 | Mono Soft |
| 334 | Monolith | | Beyond Software | | | | |
| 335 | Monser S.A. | España | | |
| 336 | Monster's Legs Productions | | Kevin McGrorty | | | | |
| 337 | Monsterbytes |
| 338 | Montevideo Uruguay | Uruguay | | |
| 339 | Monument Microgames | | | |
| 340 | Moonchild Software |
| 341 | Moonsoft | Russia | Коркино | |
| 342 | Moonstone | Reino Unido | | |
| 343 | Moonstone Computing | Reino Unido | | |
| 344 | Morbosoft | España | | |
| 345 | Morex Peripherals Ltd | | Abbeydale Designers Ltd | | | | |
| 346 | Morley Davies Associates | Reino Unido | | |
| 347 | Morpheus Games | Reino Unido | | |
| 348 | Morrisons | | Wm Morrison Supermarkets PLC | | | | |
| 349 | Morsoft | Reino Unido | | |
| 350 | Mortal Kombat Hackers Group | Russia | Moscow | |
| 351 | Mosaic Publishing Ltd | Reino Unido | | |
| 352 | Motivation Software | | Alec Carswell | | | | |
| 353 | MPF Software | Russia | | |
| 354 | MPS Group | Russia | Moscow | |
| 355 | MQM Team | República Checa | Брно | |
| 356 | Mr Byte Software | Italy | | |
| 357 | Mr. Chip Software | | Magnetic Fields | | | | |
| 358 | Mr. Ltd | Russia | | |
| 359 | Mr. Micro Ltd | | Handmade Software Ltd | | | | |
| 360 | MRP-SBS Software | Reino Unido | | |
| 361 | MRSoft | República Checa | | |
| 362 | MS Software | Germany | | |
| 363 | MS-CID | República Checa | | |
| 364 | MSD Group | Russia | | |
| 365 | Msoft | Reino Unido | | |
| 366 | MST Consultants | Reino Unido | | |
| 367 | Mugen Group | Russia | Петрозаводск | |
| 368 | Multi-Soft Games | Reino Unido | | |
| 369 | Multisoft | Germany | | |
| 370 | Multisoft Informatica Ltda | Brazil | | |
| 371 | Multyplex Group | Russia | | |
| 372 | Munning Games | Reino Unido | | |
| 373 | Mushroomsoft | Reino Unido | | |
| 374 | Music Soft | España | | |
| 375 | Musical 1 S.A. | España | | |
| 376 | Musical Muntaner S.A. | | | |
| 377 | Musicsoft | Russia | Moscow | |
| 378 | MW Gamesworld | Reino Unido | | |
| 379 | MW Software | Reino Unido | | |
| 380 | Mxxoft | Poland | | |
| 381 | My Cat Software | | | |
| 382 | Myrmidon Software | Reino Unido | | |
| 383 | Mystery Software | Reino Unido | | |
| 384 | Mystic Software | Reino Unido | | |
| 385 | Mythos Games Ltd | Reino Unido | | |
| 386 | Mythsoft | Reino Unido | | |
