| 1 | C&S | | Reino Unido | |
| 2 | C&VG | EMAP Business & Computer Publications Ltd | Reino Unido | |
| 3 | C&VG (Gamebook) | | | |
| 4 | C-Tech | | Reino Unido | |
| 5 | C.C.Guys | | Hungría | |
| 6 | C.P.S. Games | Chameleon Computer Games | Reino Unido | |
| 7 | C.S.D. Co Ltd | | Reino Unido | |
| 8 | C.S.T. Company | | | |
| 9 | C.S.V. Company | | | |
| 10 | C.Servis Games | | | |
| 11 | C64CD Studios | | | |
| 12 | Cable Software | | Reino Unido | |
| 13 | Cabsoft | Computer Cabin | | |
| 14 | Cactus | | Reino Unido | |
| 15 | Cadena SER Valladolid | | España | |
| 16 | Cadsoft | | Reino Unido | |
| 17 | Calisto | Calisto Software Ltd | | |
| 18 | Calisto Software Ltd | | | |
| 19 | calodox | | | |
| 20 | Calpac Computer Software | | Reino Unido | |
| 21 | Cambic Software | | Reino Unido | |
| 22 | Cambridge Computing Research Ltd | | Reino Unido | |
| 23 | Cambridge Micro Software | | Reino Unido | |
| 24 | Cambridge Microcomputer Centre | | Reino Unido | |
| 25 | Cambridge Microelectronics | | Reino Unido | |
| 26 | Cambridge Research | | | |
| 27 | Camden Council | | Reino Unido | |
| 28 | Camel Micros | | Reino Unido | |
| 29 | Camel Products | Cambridge Microelectronics | Reino Unido | |
| 30 | Camel Software | | Reino Unido | |
| 31 | Campbell Systems | | Reino Unido | |
| 32 | Campion Software | | Dinamarca | |
| 33 | Canaan Software | | Estados Unidos | |
| 34 | Cande Software | | España | |
| 35 | Candy Says | | | |
| 36 | Cannonball | | Rusia | |
| 37 | Canvas | | Reino Unido | |
| 38 | Capcom | | | |
| 39 | Capsoft | ThunderWare Research Center | Países Bajos | |
| 40 | Cardex | | Reino Unido | |
| 41 | Caris Software | | Reino Unido | |
| 42 | Carlo Altieri | | Italia | |
| 43 | Carnell Software Ltd | | Reino Unido | |
| 44 | Carol & Paul Bradbury | | Reino Unido | |
| 45 | Caroline Software Inc | | Rusia | Samara |
| 46 | Carrier Bag Software | | | |
| 47 | Carrium Software | | Reino Unido | |
| 48 | Carter Follis Software Associates | | Reino Unido | |
| 49 | Cartoon Time | | | |
| 50 | Cascade Games Ltd | Artronic Products Ltd | Reino Unido | |
| 51 | Cases Computer Simulations Ltd | | | |
| 52 | Casey Bee Games | | Reino Unido | |
| 53 | Cassell Ltd | Holt Saunders Ltd | | |
| 54 | Cassiopeia | | Eslovaquia | |
| 55 | Castle Software | | Reino Unido | |
| 56 | Castor Cracking Group | | Suecia | Stockholm |
| 57 | Casventures Ltd | | Reino Unido | |
| 58 | Catalunya Radio | | | |
| 59 | Catalyst Coders | | Reino Unido | |
| 60 | Cathedral Software | | Reino Unido | |
| 61 | Cav Inc | | Rusia | |
| 62 | Cavern Games | | | |
| 63 | Cavern Software | | Reino Unido | |
| 64 | CBM | | República Checa | |
| 65 | CCP Software | | Reino Unido | |
| 66 | CCS | Cases Computer Simulations Ltd | | |
| 67 | CDS Microsystems | Guildhall Leisure | | |
| 68 | CDT Productions | | Reino Unido | |
| 69 | Ce-Soft | | República Checa | |
| 70 | Celerysoft | | Reino Unido | |
| 71 | Celina Ltd | | Reino Unido | |
| 72 | Celtic Revision Software | | Reino Unido | |
| 73 | Celtic Software | | Reino Unido | |
| 74 | Celyn Jones Software | | Reino Unido | |
| 75 | Centas | | España | |
| 76 | Centaurisoft | | Reino Unido | |
| 77 | Central Solutions | | Reino Unido | |
| 78 | Centre Divulgador de la Informatica | Generalitat de Catalunya | | |
| 79 | CentreSoft | | Reino Unido | |
| 80 | Centronics | | Rusia | Moscow |
| 81 | Centronics Group | | | |
| 82 | Century | | | |
| 83 | Century City Software Ltd | | Reino Unido | |
| 84 | Century Communications | | | |
| 85 | Century Communications Ltd | Century Publishing Co. Ltd | | |
| 86 | Century Publishing Co. Ltd | | | |
| 87 | Century Software | | | |
| 88 | Century Software | Power Software S.A. | España | |
| 89 | Ceran Software | | Reino Unido | |
| 90 | Cerikopik Software Inc. | | Bielorrusia | Brest |
| 91 | CEZ | Computer Emuzone Games Studio | España | |
| 92 | CEZGS | Computer Emuzone Games Studio | España | |
| 93 | CGH Services | | | |
| 94 | Chad Software | | Reino Unido | |
| 95 | Chainik Hackers Group | | Rusia | |
| 96 | Chalksoft Ltd | | Reino Unido | |
| 97 | Challenge Software | | Reino Unido | |
| 98 | Chameleon Computer Games | | Reino Unido | |
| 99 | Chameleon Computers Ltd | | Reino Unido | |
| 100 | Chance Soft | | Eslovaquia | |
| 101 | Channel 4 Television | | Reino Unido | |
| 102 | Channel 8 Software | | Reino Unido | |
| 103 | Chaos Energy Group | | Rusia | Yoshkar-Ola |
| 104 | Chaotic Soft | | República Checa | |
| 105 | Chapman and Beckingham Software | | Reino Unido | |
| 106 | Chapterhouse | | | |
| 107 | Charles Letts & Co | | Reino Unido | |
| 108 | Charlton Tutorials | | Reino Unido | |
| 109 | Charly Computers Ltd | | Alemania | |
| 110 | Charly Records | | Reino Unido | |
| 111 | Checkpoint | | Francia | Orléans |
| 112 | Cheep Games | | Reino Unido | |
| 113 | Cheese Freak Software | | Reino Unido | |
| 114 | Cheetah International Ltd | | | |
| 115 | Cheetah Marketing Ltd | Cheetah International Ltd | | |
| 116 | CheetahSoft Ltd | Cheetah International Ltd | | |
| 117 | Chemist Soft | | Rusia | |
| 118 | ChemneSoft | | Rusia | Ufa |
| 119 | ChemneSoft Plus | | Rusia | Ufa |
| 120 | Cheshire Micro Design | | Reino Unido | |
| 121 | Cheveron Group | | | |
| 122 | Chewsoft | | Reino Unido | |
| 123 | Chezron Software | Fidcal | Reino Unido | |
| 124 | Chi-Soft | | | |
| 125 | Chibur | | Reino Unido | |
| 126 | Children of Lt. Shmidt | | Rusia | Chelyabinsk |
| 127 | Childrens Infatuated Computers | | Rusia | |
| 128 | Childsplay Software | | Reino Unido | |
| 129 | ChildWare Corporation | | Estados Unidos | |
| 130 | chip-fork | | | |
| 131 | Chips Software | | España | |
| 132 | Choice Software Ltd | | Reino Unido | |
| 133 | Chorrigames 2020 | | | |
| 134 | Chris Flynn | | | |
| 135 | Christopher James Software Ltd | | Reino Unido | |
| 136 | Chromasoft | | Reino Unido | |
| 137 | Church Army | | | |
| 138 | Church Army Resource Centre | Church Army | | |
| 139 | Church of Scotland Education Software | | Reino Unido | |
| 140 | Church of the Latter Day Speccy | | Reino Unido | |
| 141 | CHURROSOFT | | | |
| 142 | CI5 The Amaters | | República Checa | |
| 143 | Cibercomp S.A. | | España | |
| 144 | Ciberne Software | | Brasil | |
| 145 | Cibernesis | | España | |
| 146 | Cibertron Software | | Brasil | |
| 147 | CIDsoft | MS-CID | República Checa | |
| 148 | CIHC | | Uruguay | |
| 149 | Cinemaware | | Estados Unidos | |
| 150 | CIR | | Alemania | |
| 151 | Circulo de Soft | Microamigo S.A. | | |
| 152 | Citizen Software | | Reino Unido | |
| 153 | Ciudadela Software | | España | |
| 154 | Ckazka Entertainment | | | |
| 155 | Clarity Software Ltd | | Reino Unido | |
| 156 | Clasic Software | | República Checa | |
| 157 | Class Games | | Reino Unido | |
| 158 | Classic Computing | | Reino Unido | |
| 159 | Classic Conflicts | | | |
| 160 | Classic Software | | Reino Unido | |
| 161 | Classic Software | | República Checa | |
| 162 | CLAW | | Polonia | |
| 163 | Clebin Games | | | |
| 164 | Cleva Computerware | | Reino Unido | |
| 165 | Clever Music | | Reino Unido | |
| 166 | Clevers Group | | Rusia | Chelyabinsk |
| 167 | CLJ Industries | | Francia | |
| 168 | Clockwize | | Reino Unido | |
| 169 | Cloud 10 Software | | Reino Unido | |
| 170 | Cloud 9 Software | | Reino Unido | |
| 171 | Cloud Soft | | Bielorrusia | |
| 172 | Clover Services | | Reino Unido | |
| 173 | Club Software | | Reino Unido | |
| 174 | Clube Nacional de Aventura | | Portugal | |
| 175 | Clwyd Adventure Software | | Reino Unido | |
| 176 | CNGSoft | | España | |
| 177 | CnP Projectz | | | |
| 178 | Cobra Computer Software | | Reino Unido | |
| 179 | Cobra Laser | | España | |
| 180 | Cobra Soft | | Francia | |
| 181 | Cobra Software | | Ucrania | Lviv |
| 182 | Cocasoft | | España | |
| 183 | Cochique&Chichari Soft | | | |
| 184 | Code Bastards Hackers Group | | Ucrania | Kharkiv |
| 185 | Code Blaster Group | | | |
| 186 | Code Blasters | Code Blaster Group | | |
| 187 | Code Busters | | Rusia | Kharkiv |
| 188 | Code Gangsters Group | | Rusia | Nizhni Taguil |
| 189 | Code Masters Gold | Codemasters Ltd | | |
| 190 | Code Masters Ltd | Codemasters Ltd | | |
| 191 | Code Masters Plus | Codemasters Ltd | | |
| 192 | Code Monkeys | | | |
| 193 | Code Monsters | | Rusia | Omsk |
| 194 | Code Rapers Group | | Rusia | Saransk |
| 195 | Code Reingers Group | | Ucrania | Kharkiv |
| 196 | Codebusters | Code Busters | Rusia | Kharkiv |
| 197 | Codefuckers | | Rusia | Moscow |
| 198 | Codemasters Ltd | | | |
| 199 | Codemonsters Hackers Group | | Rusia | Lviv |
| 200 | CodeRaizers | | Rusia | Chelyabinsk |
| 201 | Coders' Academy Interactive Group | | Rusia | Taganrog |
| 202 | Codex Group | | Rusia | Ryazan |
| 203 | Codex Software | Codex Group | Rusia | Ryazan |
| 204 | Codigo Software | | España | |
| 205 | Coding Kings Software | | Rusia | |
| 206 | Cogitare Computing | | | |
| 207 | Cognito Software | | | |
| 208 | Collins Computing | | | |
| 209 | Collins Educational Ltd | | Reino Unido | |
| 210 | Collins Soft | Collins Educational Ltd | Reino Unido | |
| 211 | Colne Robotics Co Ltd | | Reino Unido | |
| 212 | Colonel Charisma Team | | Reino Unido | |
| 213 | Color of Magic | Colour of Magic | Rusia | Vladivostok |
| 214 | Colossoft Research | | Ucrania | |
| 215 | Colour of Magic | | Rusia | Vladivostok |
| 216 | Colourmatic Computing | | | |
| 217 | Coma Software | | Reino Unido | |
| 218 | CoMAD Soft | | Argentina | |
| 219 | Comet Software | | Reino Unido | |
| 220 | Comix | | | |
| 221 | Comix Company | | Rusia | Yoshkar-Ola |
| 222 | Command Software | | | |
| 223 | Commodore Plus | | España | |
| 224 | Companion Software | | Reino Unido | |
| 225 | Compass Software | | | |
| 226 | Compiler Software | | España | |
| 227 | Compiuter Soft | | España | |
| 228 | CompoWellcome | | Rusia | |
| 229 | Compu-Studio Ltd | | Rusia | Myrnohrad |
| 230 | Compuden Software | | Reino Unido | |
| 231 | Compulogical S.A. | | España | |
| 232 | Compumania | | España | |
| 233 | Compusound | | Reino Unido | |
| 234 | Computascope for Fun | | Reino Unido | |
| 235 | Computasolve | | Reino Unido | |
| 236 | Computer | | Rusia | |
| 237 | Computer & Software Centre | | Reino Unido | |
| 238 | Computer Adventure | | | |
| 239 | Computer Adventure Studio | | Polonia | |
| 240 | Computer Cabin | | | |
| 241 | Computer Choice | | Reino Unido | |
| 242 | Computer Club Roma-Talenti | | Italia | |
| 243 | Computer Emuzone | Computer Emuzone Games Studio | España | |
| 244 | Computer Emuzone Games Studio | | España | |
| 245 | Computer Forces Hackers Group | | | |
| 246 | Computer Gamer | | | |
| 247 | Computer Games | | Finlandia | |
| 248 | Computer Kontakt | Rätz-Eberle Verlag | | |
| 249 | Computer Life | | Rusia | |
| 250 | Computer Magic | | Reino Unido | |
| 251 | Computer Novels | | Suecia | |
| 252 | Computer Publications | | Reino Unido | |
| 253 | Computer Rating Methods | | Reino Unido | |
| 254 | Computer Rats Group | | Rusia | Kurgan |
| 255 | Computer Records | | Reino Unido | |
| 256 | Computer Rentals Ltd | | | |
| 257 | Computer Service Ltd | | | |
| 258 | Computer Services | | Reino Unido | |
| 259 | Computer Tutor | | | |
| 260 | Computer Wares | | Reino Unido | |
| 261 | Computer Wargame Corporation | | Reino Unido | |
| 262 | Computer Work Company | | Rusia | Rostov-on-Don |
| 263 | Computerhouse [UK] Ltd | | Reino Unido | |
| 264 | Computeristic | | Reino Unido | |
| 265 | Computerlock | | Reino Unido | |
| 266 | Computermania | | Uruguay | |
| 267 | Computerposter | | Alemania | |
| 268 | Computers for Education | | Reino Unido | |
| 269 | Computerworld | | Reino Unido | |
| 270 | Computing Today | | | |
| 271 | Computronic | | Alemania | |
| 272 | ComTec | | Reino Unido | |
| 273 | Concept Animations | | Reino Unido | |
| 274 | Concept Software Ltd | | Reino Unido | |
| 275 | Concern Chaos | | Rusia | St.Petersburg |
| 276 | Concrete Digital Designs | | España | |
| 277 | Conradorre Soft | | Polonia | |
| 278 | Conscience | | | |
| 279 | Consciousness | | Ucrania | |
| 280 | Consolidated Software Marketing Ltd | | Reino Unido | |
| 281 | Constellation International Association | | Rusia | Kirovsk |
| 282 | Consult Computer Systems | Consult Software Ltd | Reino Unido | |
| 283 | Consult Software Ltd | | Reino Unido | |
| 284 | Consumers' Association | | Reino Unido | |
| 285 | Continental Software | | Reino Unido | |
| 286 | Contrast Software | | Reino Unido | |
| 287 | Control Software | | Irlanda | |
| 288 | Control Technology | | | |
| 289 | Convention | | Reino Unido | Yeovil |
| 290 | Coo Coo Soft | | República Checa | |
| 291 | Cool Guyz Company | | Rusia | Chelyabinsk |
| 292 | Coolguys Ltd | | Reino Unido | |
| 293 | COPE-Soft | | Dinamarca | |
| 294 | Copper Feet | | Rusia | St.Petersburg |
| 295 | Copy Masters | | Rusia | Kaluga |
| 296 | Copyright Control | | | |
| 297 | Coral Software | | Polonia | |
| 298 | CORE Design Ltd | | Reino Unido | |
| 299 | Cornhill Services | | Reino Unido | |
| 300 | Cornsoft | Cornsoft Group Inc | | |
| 301 | Cornsoft Group Inc | | | |
| 302 | Corona Studio | | Rusia | Ufa |
| 303 | Corporation AS/DS | | Rusia | Moscow |
| 304 | Corpse Group | | Ucrania | |
| 305 | Corse Hair Softwares | | | |
| 306 | Corwen Computer Systems | | Reino Unido | |
| 307 | Cosine | | Alemania | Leipzig |
| 308 | Cosine Systems | | Reino Unido | |
| 309 | Cosmic | | | |
| 310 | Cosmic Cockerel | | Reino Unido | |
| 311 | Cosmic Software | | Reino Unido | |
| 312 | Cosmium | | | |
| 313 | Cosmix | | Rusia | Moscow |
| 314 | COSMON Software | | Grecia | |
| 315 | COSMOS designers | | | |
| 316 | Cottage Computing | | Reino Unido | |
| 317 | Courbois Software | | Países Bajos | |
| 318 | Court Software | | Reino Unido | |
| 319 | Cowl Systems | | Reino Unido | |
| 320 | Coxsoft | missing | | |
| 321 | CP Software | | Reino Unido | |
| 322 | CPL Computer Plus Soft GmbH | | Alemania | |
| 323 | CPL Computing | | Reino Unido | |
| 324 | CPS Hackers Group | | Rusia | Moscow |
| 325 | Craccer Software Team | | Dinamarca | |
| 326 | Cracked Masters Group | | | |
| 327 | Cracking Software | | Reino Unido | |
| 328 | Craft Ware | | Rusia | Yegoryevsk |
| 329 | Craig Communications Ltd | | Reino Unido | |
| 330 | Craigmount Computer Centre | | Reino Unido | |
| 331 | Cramsoft | | | |
| 332 | Crapsoft | Erik vh | Bélgica | |
| 333 | CrapTeam | | | |
| 334 | Crash | Newsfield Publications Ltd | Reino Unido | |
| 335 | Crasher Hacker Group | | | |
| 336 | Crazy Pixels Group | | | |
| 337 | Crazy Soft | | España | |
| 338 | Crazy Studio | | Rusia | St.Petersburg |
| 339 | Crazytronic | | República Checa | Znojmo |
| 340 | CRC Software | | Reino Unido | |
| 341 | Cream Computers | | Reino Unido | |
| 342 | Create Soft | | Rusia | St.Petersburg |
| 343 | Creative Computing | | Alemania | |
| 344 | Creative Computing Press | | Estados Unidos | |
| 345 | Creative Corporation Zhuki | | Ucrania | Kharkiv |
| 346 | Creative Dreams Software | | | |
| 347 | Creative Edge | | Reino Unido | |
| 348 | Creative Juices | | Reino Unido | |
| 349 | Creative Materials Ltd | | Reino Unido | |
| 350 | Creative Micro Stimulation | | Reino Unido | |
| 351 | Creative Reality | | Reino Unido | |
| 352 | Creative Sparks | Thorn EMI Video Ltd | Reino Unido | |
| 353 | Creative Technology Group Ltd | | Reino Unido | |
| 354 | Creative Technology Institute | | Dinamarca | |
| 355 | Creative.Radical.Alternative.Production Games | | Reino Unido | |
| 356 | Creativos Editoriales S.A. | | España | |
| 357 | Creators Group | | Principado de Moldavia | Chisináu |
| 358 | Creepsoft | | España | |
| 359 | Crescent | | Turquía | Istanbul |
| 360 | Crest | | Alemania | |
| 361 | CrisiSofT | | Países Bajos | |
| 362 | Critical Mass | | Rusia | Rostov-on-Don |
| 363 | CRL | Online PLC | Reino Unido | |
| 364 | CRL Group PLC | Online PLC | Reino Unido | |
| 365 | Crom Software | | España | |
| 366 | Cronosoft | | Reino Unido | |
| 367 | Cronosoft | | España | |
| 368 | Cropthorne Software | | Reino Unido | |
| 369 | Cross Software | | Reino Unido | |
| 370 | Cross Technics | | Suecia | |
| 371 | Cross-Road | | Rusia | Vsevolozhsk |
| 372 | Crossword | | | |
| 373 | Crowd Company | | Rusia | Krasnodar |
| 374 | Crusader Computing | | Reino Unido | |
| 375 | Crush Group | | Rusia | Dnipró |
| 376 | Crushers | | Letonia | Jelgava |
| 377 | Crystal Computing | Design Design Software | Reino Unido | |
| 378 | Crystal Dream | | Ucrania | Lugansk |
| 379 | Crysys | Software Publishing Associates | Reino Unido | |
| 380 | CSL Microdata | | Reino Unido | |
| 381 | CSP Systems | | Reino Unido | |
| 382 | Csucstechnika | | Hungría | |
| 383 | Cult Games | D&H Games | Reino Unido | |
| 384 | CulturaChip | | España | |
| 385 | Culture Club | | | |
| 386 | Currah Computer Components Ltd | DK'Tronics Ltd | Reino Unido | |
| 387 | Currys | | Reino Unido | |
| 388 | Curtis Jacobs Software Design Ltd | | Reino Unido | |
| 389 | Custom Cables International Ltd | Add-On Electronics Ltd | Reino Unido | |
| 390 | Custom Software | | Reino Unido | |
| 391 | CustomData Ltd | | Reino Unido | |
| 392 | CV Software | | República Checa | |
| 393 | Cybadyne | | Reino Unido | |
| 394 | Cyber Corporation | | Rusia | Krasnodar |
| 395 | Cyber Dreams Software | | Rusia | Ivanovo |
| 396 | Cyber Team | | Rusia | Iskitim |
| 397 | Cyberax Software | | Rusia | Kemerovo |
| 398 | Cybercon Enterprises | | Reino Unido | |
| 399 | Cyberex Dream | | | |
| 400 | Cybernetic Applications Ltd | | Reino Unido | |
| 401 | Cybernetic Soft | | España | |
| 402 | Cyberprog New Media | | | |
| 403 | CyberPunks Unity | | Rusia | Rybinsk |
| 404 | Cybertronic Soft | | Rusia | Moscow |
| 405 | Cybexlab Software | | República Checa | |
| 406 | Cyclone | | Reino Unido | |
| 407 | Cygnus | missing | | |
| 408 | Cygnus Software | | Reino Unido | |
| 409 | CYP | | Rusia | Komsomolsk-na-Amure |
| 410 | Czerweny Electronica S.A.I.C. | | Argentina | |
| 411 | ЦННТМ "Эврика" | | Rusia | Saransk |
| 412 | Церикопик | Cerikopik Software Inc. | Bielorrusia | Brest |
