| 1 | S de Soft | | Spain | |
| 2 | S&B Software | | United Kingdom | |
| 3 | S&C Corp. Ltd Software | | Italy | |
| 4 | S&G Software | | Germany | |
| 5 | S&S Software | | Italy | |
| 6 | S&S Software | | Russia | Moscow |
| 7 | S-Tron | missing | | |
| 8 | S. Okoloku | | United States | |
| 9 | S. System | | Russia | |
| 10 | S.D. Software | | | |
| 11 | Sabresoft | | United Kingdom | |
| 12 | Sacha Povse | | | |
| 13 | Sacred Scroll Software | | United Kingdom | |
| 14 | Saga Software | | United Kingdom | |
| 15 | Saga Software House | | United Kingdom | |
| 16 | Saga Systems Ltd | | United Kingdom | |
| 17 | Sage Group | | Russia | Samara |
| 18 | Sagesoft | | United Kingdom | |
| 19 | Sagittarian Software Ltd | | United Kingdom | |
| 20 | Sai Design | | | |
| 21 | Saint Software | | Russia | |
| 22 | Saisoft | | Czech Republic | |
| 23 | Salamander Software | | United Kingdom | |
| 24 | Sales Curve Ltd | Square Enix | | |
| 25 | Salmon Electronics Ltd | | United Kingdom | |
| 26 | Salpicao Soft | | | |
| 27 | Samar Productions | | | |
| 28 | Samurai Software | | United Kingdom | |
| 29 | Samusoft | | | |
| 30 | Sanchez Crew | | Russia | |
| 31 | Sanctum Games | | | |
| 32 | Saposoft | | | |
| 33 | Saposoftware | | | |
| 34 | Sapphire Software | | United Kingdom | |
| 35 | Sar Investment Properties | | United Kingdom | |
| 36 | Sarov Spectrum Club | | Russia | Sarov |
| 37 | SARUG Radio Amateur Group | | United Kingdom | |
| 38 | Satansoft | | Slovenia | |
| 39 | Satellite Software Ltd | Palantir Programs | United Kingdom | |
| 40 | Satin Shiva Productions | | | |
| 41 | Satsoft | | Russia | |
| 42 | Saturn Developments Ltd | | | |
| 43 | Saturnsoft | Saturn Developments Ltd | | |
| 44 | Satyr Software | | United Kingdom | |
| 45 | Saursoft | | Slovakia | |
| 46 | Savers Alliance | | Belarus | Grodno |
| 47 | Saxon Computing | | United Kingdom | |
| 48 | SBFAQ | | | |
| 49 | SC Studio GCG | | Russia | |
| 50 | SCAINET SOFT | | | |
| 51 | Scandinavian Software Crackers | | Denmark | |
| 52 | Scanner Hackers Group | | Russia | Krasnoyarsk |
| 53 | Scanner Software | | Spain | |
| 54 | Scarab Systems | | United Kingdom | |
| 55 | Scathing Soft | | Spain | |
| 56 | Scats | | | |
| 57 | Sceiron | | United Kingdom | |
| 58 | Scele & Ufo Software | | Germany | |
| 59 | Scene | | Russia | |
| 60 | ScenePt All Stars | | | |
| 61 | Scenergy Team | | Russia | Moscow |
| 62 | SciCAL Software Ltd | | United Kingdom | |
| 63 | Scientific Software | | United Kingdom | |
| 64 | Scimitar Software | | United Kingdom | |
| 65 | Scisoft | | United Kingdom | |
| 66 | Scoopex | | Poland | |
| 67 | Scope Designs | The Shaw Brothers | United Kingdom | |
| 68 | Scorby Soft | | United Kingdom | |
| 69 | Scorp Software | | Russia | Moscow |
| 70 | Scorpio | | | |
| 71 | Scorpio Gamesworld Ltd | | United Kingdom | |
| 72 | Scorpio Software | Scorpio Gamesworld Ltd | United Kingdom | |
| 73 | Scorpion | | Czech Republic | |
| 74 | Scorpion & K' Hackers Group | | Russia | St.Petersburg |
| 75 | Scorpion Club | | Russia | Moscow |
| 76 | Scorpion Firm | | Czech Republic | |
| 77 | Scorpion Hackers Group | | | |
| 78 | Scorpion Software | | Russia | |
| 79 | Scorpion Software | | United Kingdom | |
| 80 | Scorpions Software Inc | | | |
| 81 | Scot Press Ltd | | | |
| 82 | Scotsoft | | United Kingdom | |
| 83 | SCP Hackers | Sociedad de Cazadores Pekineses | Spain | |
| 84 | SCP'86 | Software Computer Projects | | |
| 85 | SCR Adventures | | United Kingdom | |
| 86 | screamer | | | |
| 87 | Screen 7 Ltd | Software Communications Ltd | United Kingdom | |
| 88 | Screen Soft | | United Kingdom | |
| 89 | Screengraphics | | United Kingdom | |
| 90 | Screensoft | | Czech Republic | |
| 91 | Screws Creative Group | | Russia | Kursk |
| 92 | Scsibrany Software | | Germany | |
| 93 | Scumari | | | |
| 94 | SD Group | | | |
| 95 | SD Micro Systems | | United Kingdom | |
| 96 | SD-Group | | | |
| 97 | SDL Adventures | | United Kingdom | |
| 98 | SDV LTD | | | |
| 99 | Se | | | |
| 100 | SEA Group | | Russia | Izhevsk |
| 101 | Seaconsoft | | Italy | |
| 102 | Seamans Beer Users Hackers Group | | Russia | Moscow |
| 103 | Seamen Beer Users Hackers Group | Seamans Beer Users Hackers Group | Russia | Moscow |
| 104 | Season Soft | | United Kingdom | |
| 105 | Sector Software | Dimensions 41 | United Kingdom | |
| 106 | See Bee Software | | United Kingdom | |
| 107 | Sega | | United Kingdom | |
| 108 | Sega and Co | | | |
| 109 | Selec Software | | United Kingdom | |
| 110 | Selected Realms | | Russia | Perm |
| 111 | Semilanceata | | | |
| 112 | Sendest | | Russia | Krasnodar |
| 113 | Sendy | | | |
| 114 | Sensible Software | Codemasters Ltd | | |
| 115 | Sensoft | | United Kingdom | |
| 116 | Sentient Software Ltd | | United Kingdom | |
| 117 | Sequentia Soft | | Spain | |
| 118 | Serachan | | Russia | |
| 119 | Serachan Group | | Ukraine | Donetsk |
| 120 | Serge Oursoft | | Russia | |
| 121 | Sergey Entertainment | | Russia | |
| 122 | Serin Software | | United Kingdom | |
| 123 | Serious Applications Software | | United Kingdom | |
| 124 | Serious Makers Group | Serious Speccy Group | Russia | Kaliningrad |
| 125 | Serious Ravers | | | |
| 126 | Serious Software | | United Kingdom | |
| 127 | Serious Speccy Group | | Russia | Kaliningrad |
| 128 | Serma Software | Serma Software Espana | | |
| 129 | Serma Software Espana | | | |
| 130 | Seroco Soft | | Spain | |
| 131 | Serranito Online | | | |
| 132 | Serzhsoft | | Russia | |
| 133 | Sesomsoft | | | |
| 134 | Set Soft | | Kazakhstan | Semey |
| 135 | Seurasoft | | Poland | |
| 136 | Seven Stars Publishing | | United Kingdom | |
| 137 | Severn Software | Interceptor Group | United Kingdom | |
| 138 | Seymour Systems | | United Kingdom | |
| 139 | SF Group | | Russia | Tihvin |
| 140 | SF Software | | Russia | Moscow |
| 141 | SF Studio | | | |
| 142 | Sfera Soft Ltd | | | |
| 143 | SG Comp | | | |
| 144 | SG Software [2] | | Russia | |
| 145 | SG-Team | | Ukraine | Cherkasy |
| 146 | SGL Team | | Russia | Moscow |
| 147 | Sgt Pepper | | | |
| 148 | Shabash Soft Group | | Russia | Ulyanovsk |
| 149 | Shades | | | |
| 150 | Shadez | | | |
| 151 | Shadow Games | | | |
| 152 | Shadow Group | | Russia | Kovrov |
| 153 | Shadow Soft | | Russia | Novosibirsk |
| 154 | Shadow Software | | United Kingdom | |
| 155 | Shaft Corporation LTD | | | |
| 156 | Shamsoft | | Russia | |
| 157 | Shards Software Ltd | Kesherweb | | |
| 158 | Sharma Software | | United Kingdom | |
| 159 | Sharps Inc | | United States | |
| 160 | Shattered Dreams | | Denmark | |
| 161 | Shaun Bebbington | | United Kingdom | |
| 162 | Sheer Logic | | | |
| 163 | Sheol Software | | United Kingdom | |
| 164 | Sherston Software | | United Kingdom | |
| 165 | Shield Computer Services | | | |
| 166 | Shirekilo Ltd | | United Kingdom | |
| 167 | Shisoft | | Russia | |
| 168 | Shiva Publishing Ltd | | United Kingdom | |
| 169 | Shmaps Group | | Russia | Moscow |
| 170 | Shock Brigade | | Russia | Kaliningrad |
| 171 | Shock Software | | Russia | Kirov |
| 172 | ShockWave | | Russia | Chelyabinsk |
| 173 | Shodan Software | | United Kingdom | |
| 174 | Shoemakers of Filipp | | Russia | |
| 175 | Shop For Games | | Slovakia | |
| 176 | Shorten Suite Software | | United Kingdom | |
| 177 | Shrap Software | | Slovakia | |
| 178 | Shrsoft | | Russia | |
| 179 | Shulwater Ltd | | United Kingdom | |
| 180 | Shumice Software Company | | Czech Republic | Šumice |
| 181 | Shura Code Corporation | | Russia | |
| 182 | Shuric Program | | Russia | |
| 183 | Sibcrew | | Russia | |
| 184 | Siberian Group | | Russia | Krasnoyarsk |
| 185 | Siberian Overwhelming Software | | Russia | Novosibirsk |
| 186 | sibKrew | Sibcrew | Russia | |
| 187 | Sibylasoft | | Slovakia | |
| 188 | Sickbay Games | | | |
| 189 | Sidewinder Micro-Systems | | United Kingdom | |
| 190 | Siel UK Ltd | | United Kingdom | |
| 191 | Sierra On-Line | | United States | |
| 192 | Sift S.A. | | Spain | |
| 193 | Siglo XX | | Spain | |
| 194 | Sigma Soft | | United Kingdom | |
| 195 | Sigma Technical Press | | United Kingdom | |
| 196 | Sigmasoft | | United Kingdom | |
| 197 | Signature Designers Group | | | |
| 198 | Silas Software | | United Kingdom | |
| 199 | Silence Crionix Electronics Entertainment (Scene) | | Ukraine | |
| 200 | Silhouette Software | | United Kingdom | |
| 201 | Silicon Brains | | Ukraine | Mykolaiv |
| 202 | Silicon Games | | Spain | |
| 203 | Silicon Joy | | | |
| 204 | Silicon Kid | | United Kingdom | |
| 205 | Silicon Software | | United Kingdom | |
| 206 | Silva Soft | | Russia | |
| 207 | Silver Fox Communications Ltd | | United Kingdom | |
| 208 | Silver Soft | | Russia | Chelyabinsk |
| 209 | Silver Star Group | | Russia | |
| 210 | Silver Sword Software | | Czech Republic | |
| 211 | Silverbird Software Ltd | Telecomsoft | United Kingdom | |
| 212 | Silverlind Ltd | | United Kingdom | |
| 213 | Silversoft Ltd | Online PLC | United Kingdom | |
| 214 | Sim & BonySoft | | Russia | |
| 215 | Simba Software | | United Kingdom | |
| 216 | simbols | | Russia | Chaykovskiy |
| 217 | Simmer Software | | United Kingdom | |
| 218 | Simmons Electronics | | United Kingdom | |
| 219 | Simon Allan Software | | United Kingdom | |
| 220 | Simon Micro-Soft | | United Kingdom | |
| 221 | Simon Software | | United Kingdom | |
| 222 | SimonSoft | | | |
| 223 | Simple Company | | Russia | |
| 224 | Simple Soft | | | |
| 225 | Simply Software | | United Kingdom | |
| 226 | Simsoft | | Russia | |
| 227 | Sinc Masters Creative Group | | Russia | Nizhniy Novgorod |
| 228 | Sinclair Club | | Russia | Neftekamsk |
| 229 | Sinclair Club Zlin | | Czech Republic | |
| 230 | Sinclair Gebruiker | Micropress | Netherlands | |
| 231 | Sinclair Learning Lab | | | |
| 232 | Sinclair Programs | ECC Publications Ltd | | |
| 233 | Sinclair QL Preservation Project | | | |
| 234 | Sinclair Research Ltd | | United Kingdom | |
| 235 | Sinclair Research Ltd [PT] | | United Kingdom | |
| 236 | Sinclair Society | | | |
| 237 | Sinclair User | ECC Publications Ltd | | |
| 238 | Sinclair User | | United Kingdom | |
| 239 | Sinclair User Club | | Netherlands | |
| 240 | Sinclairland | | Russia | |
| 241 | Sindicato del Software | | Spain | |
| 242 | Singular Crew | | Hungary | |
| 243 | Sinsoft | | Czech Republic | |
| 244 | Sintax S.A. | | Spain | |
| 245 | Sinus Software | | Czech Republic | |
| 246 | Sipe | | Italy | |
| 247 | Sirius Group | | Russia | Kazan |
| 248 | Sirius Software | | United Kingdom | |
| 249 | SirotaSoft | | Ukraine | |
| 250 | Sistemas de Informatica e Som Ltda | | | |
| 251 | Sitting Bull Software | | United Kingdom | |
| 252 | Sivis | Sistemas de Informatica e Som Ltda | | |
| 253 | Sizzlers | | | |
| 254 | SJS Software | | United Kingdom | |
| 255 | SKAL Studio | | Russia | Perm |
| 256 | Skorpyo | | Spain | |
| 257 | Skrju | | Russia | |
| 258 | skrumpy | | United Kingdom | |
| 259 | SKS Software | | United Kingdom | |
| 260 | SKUAT Soft | | Spain | |
| 261 | Skusoft | | Czech Republic | |
| 262 | Sky | | | |
| 263 | SKYNET | | Russia | Taganrog |
| 264 | Skyslip Software | | United Kingdom | |
| 265 | Skysoft | | United Kingdom | |
| 266 | SLA Corp Ltd | | Poland | |
| 267 | Slabihoud Software | | Germany | |
| 268 | SlavJack Software | | Russia | Cheboksary |
| 269 | Sleepwalkers | | Russia | |
| 270 | Slicker Hackers Group | | Russia | Tula |
| 271 | Slider Comp | | Kazakhstan | Semey |
| 272 | Sliders | | Russia | Sochi |
| 273 | Sliders Creative & Hackers Group | | Russia | Volzhskiy |
| 274 | Slipstream | | | |
| 275 | Sloanysoft | | | |
| 276 | Slogger Software | | United Kingdom | |
| 277 | Slovak Design Museum | | Slovakia | |
| 278 | Slovak Game Developers Association | | Slovakia | |
| 279 | Slow Death Company | | | |
| 280 | Slowglass | | Spain | |
| 281 | SLS | | | |
| 282 | SLUG | | United Kingdom | |
| 283 | SM Indipendant Software | | Italy | |
| 284 | SM Software | | Italy | |
| 285 | Small School Software | | United Kingdom | |
| 286 | Smart Egg Software | | United Kingdom | |
| 287 | Smash Hackers Band | | Ukraine | Nova Vodolaha |
| 288 | Smash Soft Inc | | Russia | Nizhniy Novgorod |
| 289 | SMB Software | | United Kingdom | |
| 290 | SMC Goldseal Software | | United Kingdom | |
| 291 | SMFX | | | |
| 292 | SmileGames | | | |
| 293 | Smiling Assassin | | United Kingdom | |
| 294 | Smokers | Smokers Hackers Group | Belarus | Minsk |
| 295 | Smokers Hackers Group | | Belarus | Minsk |
| 296 | Smokers Team | Smokers Hackers Group | Belarus | Minsk |
| 297 | Sneesby Software | | United Kingdom | |
| 298 | SNK-Graphics | | Russia | |
| 299 | Snoopysoft | | Germany | |
| 300 | Soccer Enterprises | | United Kingdom | |
| 301 | Sociedad de Cazadores Pekineses | | Spain | |
| 302 | Sociedade por Accions | | Spain | |
| 303 | Sockmonsters Ltd | | United Kingdom | |
| 304 | Socratic Software | | United Kingdom | |
| 305 | Sodom & Gommorah Software | | | |
| 306 | Soft Centre | | United Kingdom | |
| 307 | Soft Concern Ltd | | United Kingdom | |
| 308 | Soft Corn | | United Kingdom | |
| 309 | Soft Design | | United Kingdom | |
| 310 | Soft et Micro | | France | |
| 311 | Soft Hits | EMAP Business & Computer Publications Ltd | United Kingdom | |
| 312 | Soft Joe's Software | | United Kingdom | |
| 313 | Soft Juliet | Juliet Software | Spain | |
| 314 | Soft Machine | | United Kingdom | |
| 315 | Soft Option Ltd | | United Kingdom | |
| 316 | Soft Sell Computer Software | | United Kingdom | |
| 317 | Soft-Music | | Germany | |
| 318 | Softaxel | | Belarus | Minsk |
| 319 | Softdreamers | | Kazakhstan | |
| 320 | Softeam | | United Kingdom | |
| 321 | SOFTEC | Florin Giurcan | Romania | |
| 322 | SOFTEC | | Romania | |
| 323 | SOFTEC [PT] | | Portugal | |
| 324 | Softechnics | | | |
| 325 | Softek | Edge Games Inc | | |
| 326 | Softek International Ltd | Edge Games Inc | | |
| 327 | Softel | | United Kingdom | |
| 328 | Softenterprise | | Russia | St.Petersburg |
| 329 | Softfar | | Czech Republic | |
| 330 | Softhouse Ltd | | Slovakia | |
| 331 | SoftKristian | | Brazil | |
| 332 | Softland Studio | | Russia | St.Petersburg |
| 333 | Softlee Systems | | United Kingdom | |
| 334 | Softlink | | United Kingdom | |
| 335 | Softmans Group | | Russia | Nizhny Tagil |
| 336 | Softricks | | United Kingdom | |
| 337 | Softronic | | Czech Republic | |
| 338 | SoftShop International | | United Kingdom | |
| 339 | Softstar | | Russia | Moscow |
| 340 | Softstone Ltd | | United Kingdom | |
| 341 | Softstorm Developments | | United Kingdom | |
| 342 | Softsync Inc | | | |
| 343 | Software AB | | | |
| 344 | Software Amaters | | Slovakia | |
| 345 | Software Amusements | | | |
| 346 | Software Artists | | United Kingdom | |
| 347 | Software Atlantico | | Spain | |
| 348 | Software BV | | | |
| 349 | Software Center S.A. | | Spain | |
| 350 | Software Communications Ltd | | United Kingdom | |
| 351 | Software Computer Projects | | | |
| 352 | Software Conversions Ltd | | United Kingdom | |
| 353 | Software Cottage | | United Kingdom | |
| 354 | Software Creations | | United Kingdom | Manchester |
| 355 | Software Editores | | Spain | |
| 356 | Software Farm | | United Kingdom | |
| 357 | Software for All | | United Kingdom | |
| 358 | Software for Excellence | | United States | |
| 359 | Software Foundation | | United Kingdom | |
| 360 | Software Home | | Peru | |
| 361 | Software Images | | United Kingdom | |
| 362 | Software J&J | | Spain | |
| 363 | Software Liason | | United Kingdom | |
| 364 | Software mb | | Spain | |
| 365 | Software Micro Chip S.L. | | | |
| 366 | Software of Sweden | | Sweden | |
| 367 | Software Projects Ltd | | United Kingdom | |
| 368 | Software Publishing Associates | | United Kingdom | |
| 369 | Software Rebels | | Czech Republic | |
| 370 | Software Saur | | Slovakia | |
| 371 | Software Solutions | | United Kingdom | |
| 372 | Software Sorcery | | United Kingdom | |
| 373 | Software Spectrum | | Italy | |
| 374 | Software Studio | | Czech Republic | |
| 375 | Software Studios | | United Kingdom | |
| 376 | Software Supersavers Ltd | Software Projects Ltd | United Kingdom | |
| 377 | Softwarecete | | | |
| 378 | Softwarrior | | Russia | St.Petersburg |
| 379 | Softwood Programs | | United Kingdom | |
| 380 | Softzone Ltd | | United Kingdom | |
| 381 | SOKOMIND designers | | | |
| 382 | Solar Publishing | | United Kingdom | |
| 383 | Solarsoft | Sunshine Books Ltd | United Kingdom | |
| 384 | Sole Solution Software | | United Kingdom | |
| 385 | SOLI | Les Systemes d'Ordinateur LOGO Inc | | |
| 386 | Solid Image Ltd | | United Kingdom | |
| 387 | Solsoft | | United Kingdom | |
| 388 | Solway Software | | United Kingdom | |
| 389 | Sonic 91 Software | | | |
| 390 | Sonic Projects | | United Kingdom | |
| 391 | Sonic Soft | | United Kingdom | |
| 392 | Sonic Software | | United Kingdom | |
| 393 | Sonnen Verlag AG | | Germany | |
| 394 | Sony Inc | | | |
| 395 | Sony Music Entertainment | | | |
| 396 | Sopuch Soft | | Czech Republic | |
| 397 | Sorbon Soft | | Spain | |
| 398 | Sortronics | | Czech Republic | Plzeň |
| 399 | SOS Ltd | | Spain | |
| 400 | Sospan Soft | | United Kingdom | |
| 401 | Sound Images | | United Kingdom | |
| 402 | Sound-on-Sound | Iberofon S.A. | Spain | |
| 403 | Source Software Ltd | | United Kingdom | |
| 404 | Source Solutions, Inc. | Cheveron Group | | |
| 405 | South Coast | | United Kingdom | |
| 406 | South Gold | | Russia | Nizhniy Novgorod |
| 407 | Southern Educational Software | | United Kingdom | |
| 408 | Southern Software | | United Kingdom | |
| 409 | Southway Software | | United Kingdom | |
| 410 | Sovereign Software | | United Kingdom | |
| 411 | SP Enterprises | | United Kingdom | |
| 412 | SP Software | | United Kingdom | |
| 413 | Space Age Software | | United Kingdom | |
| 414 | Space Compani | | Russia | Moscow |
| 415 | Space Poison | | | |
| 416 | Space Team Group | | Russia | Krasnoyarsk |
| 417 | Spaceballs | | France | Orléans |
| 418 | Spaceman Ltd | | United Kingdom | |
| 419 | Spacesoft | | Netherlands | |
| 420 | Spark Creative Group | | Ukraine | Donetsk |
| 421 | Spark Software | | Spain | |
| 422 | Sparklers | Thorn EMI Video Ltd | United Kingdom | |
| 423 | Sparrow Books | Arrow Books Ltd | United Kingdom | |
| 424 | Spartan Software | | United Kingdom | |
| 425 | Spartans Sports Association | | United Kingdom | |
| 426 | SPE | | | |
| 427 | Speccy | | | |
| 428 | Speccy Boyz | | Slovakia | Košice |
| 429 | Speccy.pl | | Poland | |
| 430 | Speccysoft | | United Kingdom | |
| 431 | Special FX Software Ltd | Rage Software PLC | | |
| 432 | Special Playgames | New Special Playgames | Italy | |
| 433 | Special Soft | | Spain | |
| 434 | Special Team | | Slovakia | |
| 435 | Specialist Programs | | United Kingdom | |
| 436 | Specsoft | | United Kingdom | |
| 437 | Spectra Computing | | Germany | |
| 438 | Spectra Soft | | United Kingdom | |
| 439 | Spectrasoft | | United Kingdom | |
| 440 | SPECTRAVENTURA | | Spain | |
| 441 | Spectravision | | Czech Republic | |
| 442 | Spectraxx Tape Magazine | | United Kingdom | |
| 443 | Spectre | | Hong Kong | Minsk |
| 444 | Spectre Guys | | Ukraine | |
| 445 | Spectresoft Ltd | | United Kingdom | |
| 446 | Spectrum Aces Group | | Russia | Kirov |
| 447 | Spectrum Adventure Exchange Club | | United Kingdom | |
| 448 | Spectrum Club | | United Kingdom | |
| 449 | Spectrum Computer Info User Club | | Germany | |
| 450 | Spectrum Computing | | | |
| 451 | Spectrum Discovery Club | | United Kingdom | |
| 452 | Spectrum Electronics | | United Kingdom | |
| 453 | Spectrum Fanatics Group | | Russia | Moscow |
| 454 | Spectrum Games Ltd | | | |
| 455 | Spectrum Holdings | | United Kingdom | |
| 456 | Spectrum Microbase | | United Kingdom | |
| 457 | Spectrum Omega Software | | Czech Republic | |
| 458 | Spectrum Pricing | | United Kingdom | |
| 459 | Spectrum Software | | United Kingdom | |
| 460 | Spectrum Unemployed Users Group | | United Kingdom | |
| 461 | Spectrum User | | United Kingdom | |
| 462 | Spectrum User Club Wuppertal | | Germany | |
| 463 | Spectrum Warriors Corp. | | Belarus | Grodno |
| 464 | Spectrum's World Corp | | Russia | Chelyabinsk |
| 465 | SpectrumSysWare | | Hungary | |
| 466 | Speculator Software | | United Kingdom | |
| 467 | Speed Code | | Russia | St.Petersburg |
| 468 | Speed Company | | Russia | Samara |
| 469 | Speedway | | Russia | Voronezh |
| 470 | Speedwell Software | | United Kingdom | |
| 471 | Spencer Software | | United Kingdom | |
| 472 | Spermasoft Masturbatories | | Greece | |
| 473 | Spersoft | | Czech Republic | |
| 474 | Sphere Software | | United Kingdom | |
| 475 | Spheresoft | | United Kingdom | |
| 476 | Spi-Soft | | United Kingdom | |
| 477 | Spider Games | | United Kingdom | |
| 478 | Spiders Group | | Belarus | Gomel |
| 479 | Spidersoft | | United Kingdom | |
| 480 | Spidersoft | | United Kingdom | |
| 481 | Spidersoft | | United Kingdom | |
| 482 | SpinalSoft | | | |
| 483 | Spindrift Software | | United Kingdom | |
| 484 | Spinnaker Software Corporation | Broderbund Software | United States | |
| 485 | Spiral | | | |
| 486 | Spiral Software | | United Kingdom | |
| 487 | Spiridonenko MV | | Russia | |
| 488 | Spirit Software | | United Kingdom | |
| 489 | SPL | | Czech Republic | |
| 490 | Spoof Software | | United Kingdom | |
| 491 | Sport & Racing Software | | United Kingdom | |
| 492 | Sportsoft | | United Kingdom | |
| 493 | Sprite Club Ltd | | Russia | Ulyanovsk |
| 494 | Sprites | | France | |
| 495 | Sprytes Ltd | | United Kingdom | |
| 496 | SPS Designs | | United Kingdom | |
| 497 | Sputnik | | Poland | |
| 498 | Square Enix | | | |
| 499 | Squaresoft | | Russia | |
| 500 | SSC-Soft | Scandinavian Software Crackers | Denmark | |
| 501 | Ssoft | | United Kingdom | Taganrog |
| 502 | SSPH2 | | Czech Republic | |
| 503 | St. Bride's School | | | |
| 504 | St. Michael | Marks & Spencer | United Kingdom | |
| 505 | Stable Single Hackers Group | | Ukraine | Kharkiv |
| 506 | Stack Computer Services Ltd | | United Kingdom | |
| 507 | Stale Pixels | | | |
| 508 | Stalker | missing | | |
| 509 | Stalker Company | | Russia | Pskov |
| 510 | Stall Edition | Studio Stall | Russia | Pervouralsk |
| 511 | Stankisoft | | Germany | |
| 512 | StapleSoft | | Russia | |
| 513 | Stapsoft | | Czech Republic | |
| 514 | Star Computer Games | | Portugal | |
| 515 | Star Control Hackers Group | | Ukraine | Kharkiv |
| 516 | Star Dreams | | United Kingdom | |
| 517 | Star Group | | Russia | Yoshkar-Ola |
| 518 | Star Soft | | Portugal | |
| 519 | Star Soft Group | | Russia | Yoshkar-Ola |
| 520 | Star Software | Tony J. Byrne | United Kingdom | |
| 521 | Starbex Systems | | United Kingdom | |
| 522 | Starcade | Grandslam Interactive Ltd | | |
| 523 | Starcrash Software Systems | | United Kingdom | |
| 524 | Stardust | | Russia | Perm |
| 525 | Stardust Software | | United Kingdom | |
| 526 | Starfire Hackers Group | | Russia | Moscow |
| 527 | Starlight Software | Planthills Ltd | | |
| 528 | Starlite Software | | United Kingdom | |
| 529 | Stars of Keladan | | Russia | Samara |
| 530 | Stars Software | | United Kingdom | |
| 531 | Stars Spectrum | | Spain | |
| 532 | Starsoft | | United Kingdom | |
| 533 | Starsoft [2] | | | |
| 534 | Starsoft Computer's Company | | Czech Republic | |
| 535 | Starsoft Educational | | United Kingdom | |
| 536 | StarterSoft | | United Kingdom | |
| 537 | Startgame Soft | | Spain | |
| 538 | Starzone Software | | United Kingdom | |
| 539 | State Soft Ltd | | United Kingdom | |
| 540 | Static Soft | | Spain | |
| 541 | Status Software | | United Kingdom | |
| 542 | STD Software | | United Kingdom | |
| 543 | Stealth Fighter Hackers Group | | Russia | Ulyanovsk |
| 544 | Steam Railway Simulations | | United Kingdom | |
| 545 | steamroller | | | |
| 546 | Steel City Software Engineers | | | |
| 547 | Steel Falcons | | Ukraine | Lviv |
| 548 | Stell Software | | United Kingdom | |
| 549 | Stellar Company Inc. | | Russia | |
| 550 | Stellar Services | | United Kingdom | |
| 551 | Stellar Software | | United Kingdom | |
| 552 | STEP Creative Group | | Russia | Moscow |
| 553 | Stephen Hartley Computing | | | |
| 554 | Stephen Hartley Software | | United Kingdom | |
| 555 | Sterling Endeavours | | United Kingdom | |
| 556 | Sterling Publications Ltd | | | |
| 557 | Sterling Software | Sterling Publications Ltd | | |
| 558 | Steve Forde | | United Kingdom | |
| 559 | Steve's Software | | | |
| 560 | StewSoft | | Slovakia | |
| 561 | Stichting Impuls | | | |
| 562 | Stichting Scoop Hobbyfonds | | | |
| 563 | Stivsoft | | Yugoslavia | |
| 564 | Stocks & Shares | | | |
| 565 | Stocksoft | | United Kingdom | |
| 566 | Stonechat Productions | | United Kingdom | |
| 567 | STOP Informatica | | Brazil | |
| 568 | Storm and Tempest | | United Kingdom | |
| 569 | Storm Software | | United Kingdom | |
| 570 | Storm Software | | | |
| 571 | Stormbringer Software | | United Kingdom | |
| 572 | Stormlord Company | | Russia | Tomsk |
| 573 | STR Group | | Russia | Ryazan |
| 574 | Strand Games | | | |
| 575 | Strange Software | | United Kingdom | |
| 576 | Strangers Group | | Russia | Odesa |
| 577 | Strategic Creative Group | | Russia | Gukovo |
| 578 | Strategik & Tactics Ryazan Group | | Russia | Ryazan |
| 579 | Stratic Software | | United Kingdom | |
| 580 | Stream Hackers | | Russia | Moscow |
| 581 | Streetwise | | | |
| 582 | Strobe [A Flash of Brilliance] | UK Software Ltd | | |
| 583 | Studak Software | | Czech Republic | |
| 584 | Studio 'Godness of Destiny' | | | |
| 585 | Studio 7 | | Latvia | Riga |
| 586 | Studio B Ltd | | | |
| 587 | Studio Computerowe Koala | | Poland | |
| 588 | Studio Design | | | |
| 589 | Studio ITR | | Russia | Kaliningrad |
| 590 | Studio JUA | | | |
| 591 | Studio K&S | | | |
| 592 | Studio KF | | | |
| 593 | Studio Scorpion Group | | Ukraine | Lviv |
| 594 | Studio Spectrum | | Ukraine | Lviv |
| 595 | Studio Stall | | Russia | Pervouralsk |
| 596 | Studio SZC | | Russia | Chelyabinsk |
| 597 | Studio TM'M | Студия TM'M | Russia | Krasnoyarsk |
| 598 | Studio VIKS | | | |
| 599 | Studio VISA | | Belarus | Vitebsk |
| 600 | Studio Возраждение | | Russia | Omsk |
| 601 | Stuffduck Software | The Shaw Brothers | United Kingdom | |
| 602 | Sty-Detch Crew | | Ukraine | |
| 603 | Style | | | |
| 604 | Style Group | | Russia | |
| 605 | Style Soft | | United Kingdom | |
| 606 | Subdivision Team | | Russia | Moscow |
| 607 | Subway Software | | United Kingdom | |
| 608 | Succes Software | | | |
| 609 | Success Group | | | |
| 610 | Sugar Loaf Software | | United Kingdom | |
| 611 | Sulis Software Ltd | | United Kingdom | |
| 612 | Summit Software | Alternative Software Ltd | United Kingdom | |
| 613 | Summit Software | | United Kingdom | |
| 614 | Sun Corp. | | Russia | |
| 615 | Sun Soft | | Germany | |
| 616 | Sunrise Electronic Ltd | | | |
| 617 | Sunshine Books Ltd | | United Kingdom | |
| 618 | Sunshine Publications Ltd | | | |
| 619 | Sunsoft | | Russia | Chelyabinsk |
| 620 | Sunteam | | | |
| 621 | Supa Nova Ltd | | United Kingdom | |
| 622 | Supavision LTD | | United Kingdom | |
| 623 | Super Play Software | | Russia | |
| 624 | Super Sparklers | Thorn EMI Video Ltd | United Kingdom | |
| 625 | Superior Interactive | | | |
| 626 | Superior Software | | United Kingdom | |
| 627 | Superior Software Ltd | Superior Interactive | | |
| 628 | SuperNet Group | | Russia | Moscow |
| 629 | Superscape Ltd | | United Kingdom | |
| 630 | Supersoft | | United Kingdom | |
| 631 | Supersoft | | Germany | |
| 632 | SuperSoft | | Romania | |
| 633 | Supersoft | | Brazil | |
| 634 | Supersoft [4] | | Czech Republic | |
| 635 | Supersoft Systems | | | |
| 636 | Supersonic Software Ltd | | United Kingdom | |
| 637 | Surdakar Group | | Russia | Rybinsk |
| 638 | Sussex Software | | United Kingdom | |
| 639 | SUUG | Spectrum Unemployed Users Group | United Kingdom | |
| 640 | Suzy Soft | | Croatia | |
| 641 | SVC Software | | Ukraine | |
| 642 | Svenska Soft Service | | Sweden | |
| 643 | Svet Kompjutera | | Serbia | |
| 644 | Svosatasoft | | Czech Republic | |
| 645 | Swannsoft | | United Kingdom | |
| 646 | Swashbuckling Disappointment | | United Kingdom | |
| 647 | Swiecie Software Company | | Poland | |
| 648 | SWM Software | | | |
| 649 | Sword Software | | United Kingdom | |
| 650 | Sybila Soft | | Slovakia | |
| 651 | Sybilasoft | | Slovakia | Bratislava |
| 652 | Sydney Development Corporation | | | |
| 653 | Sygma Press | | | |
| 654 | Synacroop Software | | United Kingdom | |
| 655 | Sync | Creative Computing Press | United States | |
| 656 | Syndicate Group | | Ukraine | |
| 657 | Syndrome | | Russia | Penza |
| 658 | Synergistic Software Inc | | United States | |
| 659 | Synergy | | United Kingdom | |
| 660 | Syntax Software | | United Kingdom | |
| 661 | Syntax Software [2] | | | |
| 662 | Syrox | | United Kingdom | |
| 663 | Syrtis Software | | United Kingdom | |
| 664 | Sysoft | | United Kingdom | |
| 665 | System 3 Software Ltd | | United Kingdom | |
| 666 | System 4 | System 4 de Espana S.A. | | |
| 667 | System 4 de Espana S.A. | | | |
| 668 | System Applied Technology | | United Kingdom | |
| 669 | System Software | | United Kingdom | |
| 670 | System-Soft | | United Kingdom | |
| 671 | System4 | | | |
| 672 | Systematic Group | | Russia | Kirov |
| 673 | Systems Editoriale | | Italy | |
| 674 | Szafran | | | |
| 675 | Szafran Soft | | | |
| 676 | Системотехника | | Russia | Ivanovo |
| 677 | Студия "Парсек" | | Russia | Cheboksary |
| 678 | Студия TM'M | | Russia | Krasnoyarsk |
