| 1 | S de Soft | España | | |
| 2 | S&B Software | Reino Unido | | |
| 3 | S&G Software [1] | Germany | | |
| 4 | S&S Software | Italy | | |
| 5 | S. Okoloku | Estados Unidos | | |
| 6 | S. System | Russia | | |
| 7 | S.C.E.N.E. [2] | Russia | | |
| 8 | S.D. Software | | Nev Young | | | | |
| 9 | Sabresoft | Reino Unido | | |
| 10 | Sacred Scroll Software | Reino Unido | | |
| 11 | Saga Software | Reino Unido | | |
| 12 | Saga Software House | Reino Unido | | |
| 13 | Saga Systems Ltd | Reino Unido | | |
| 14 | Sage | Russia | Самара | |
| 15 | Sage Group | Russia | Самара | |
| 16 | Sagesoft | Reino Unido | | |
| 17 | Sagittarian Software Ltd | Reino Unido | | |
| 18 | Saint Software | Russia | | |
| 19 | Saisoft | República Checa | | |
| 20 | Salamander Software | Reino Unido | | |
| 21 | Sales Curve Ltd | | Square Enix | | | | |
| 22 | Salmon Electronics Ltd | Reino Unido | | |
| 23 | Salpicao Soft | | | |
| 24 | Samurai Software | Reino Unido | | |
| 25 | Samusoft | | Andres Roberto Samudio Monro | | | | |
| 26 | Saposoftware |
| 27 | Sapphire Software | Reino Unido | | |
| 28 | SARUG Radio Amateur Group | Reino Unido | | |
| 29 | Satansoft | Slovenia | | |
| 30 | Satellite Software Ltd | | Palantir Programs | | | | |
| 31 | Satin Shiva Productions | | | |
| 32 | Satsoft | Russia | | |
| 33 | Saturn Developments Ltd | | | |
| 34 | Saturnsoft | | Saturn Developments Ltd | | | | |
| 35 | Satyr Software | Reino Unido | | |
| 36 | Saursoft | | Lubomir Salanci | | | | |
| 37 | Savers Alliance | Russia | Гродно | |
| 38 | Saxon Computing | Reino Unido | | |
| 39 | SBFAQ | | | |
| 40 | SC Studio GCG | Russia | | |
| 41 | SCAINET SOFT | | | |
| 42 | Scandinavian Software Crackers | Denmark | | |
| 43 | Scandinavian Software Crackers (SSC-Soft) | Denmark | | |
| 44 | Scanner Hackers Group | Russia | Красноярск |  |
| 45 | Scanner Software | España | | |
| 46 | Scarab Systems | Reino Unido | | |
| 47 | Scathing Soft |
| 48 | Sceiron |
| 49 | Scele & Ufo Software | Germany | | |
| 50 | Scenergy Team | Russia | Moscow | |
| 51 | SCG | Russia | | |
| 52 | SciCAL Software Ltd | Reino Unido | | |
| 53 | Scientific Software | Reino Unido | | |
| 54 | Scimitar Software | Reino Unido | | |
| 55 | Scisoft | Reino Unido | | |
| 56 | Scope Designs | | The Shaw Brothers | | | | |
| 57 | Scorby Soft | Reino Unido | | |
| 58 | Scorpio Gamesworld Ltd | Reino Unido | | |
| 59 | Scorpio Software | | Scorpio Gamesworld Ltd | | | | |
| 60 | Scorpion | República Checa | | |
| 61 | Scorpion & K' Hackers Group | Russia | St.Petersburg | |
| 62 | Scorpion Club | Russia | Moscow | |
| 63 | Scorpion Software [1] | Reino Unido | | |
| 64 | Scorpion Software [2] | Russia | | |
| 65 | Scot Press Ltd | | | |
| 66 | Scotsoft | Reino Unido | | |
| 67 | Scott Adams | Estados Unidos | | |
| 68 | Scott P. Denyer | Reino Unido | | |
| 69 | SCP Hackers | | Sociedad de Cazadores Pekineses | | | | |
| 70 | SCP'86 | | Software Computer Projects | | | | |
| 71 | SCR Adventures | Reino Unido | | |
| 72 | Screen 7 Ltd | | Software Communications Ltd | | | | |
| 73 | Screen Soft | Reino Unido | | |
| 74 | Screengraphics | Reino Unido | | |
| 75 | Scsibrany Software | Germany | | |
| 76 | Scumari |
| 77 | SD Micro Systems | Reino Unido | | |
| 78 | SDL Adventures | Reino Unido | | |
| 79 | Se | | | |
| 80 | Seaconsoft | Italy | | |
| 81 | Seamans | Russia | Moscow | |
| 82 | Seamans Beer Users Hackers Group | Russia | Moscow | |
| 83 | Season Soft |
| 84 | Sector Software | | Dimensions 41 | | | | |
| 85 | See Bee Software | Reino Unido | | |
| 86 | Selec Software | Reino Unido | | |
| 87 | Selected Realms | Russia | Пермь | |
| 88 | Semilanceata | | | |
| 89 | Sendest | Russia | Krasnodar | |
| 90 | Sendy |
| 91 | Sensible Software | | Codemasters Ltd | | | | |
| 92 | Sensoft | Reino Unido | | |
| 93 | Sentient Software Ltd | Reino Unido | | |
| 94 | Serge Oursoft | Russia | | |
| 95 | Sergey Entertainment | Russia | | |
| 96 | Sergio G.M. | España | | |
| 97 | Sergio Vaquer Montes | España | | |
| 98 | Serin Software | Reino Unido | | |
| 99 | Serious Applications Software | Reino Unido | | |
| 100 | Serious Makers Group | Russia | Калининград | |
| 101 | Serious Software | Reino Unido | | |
| 102 | Serma Software | | Serma Software Espana | | | | |
| 103 | Serma Software Espana | | | |
| 104 | Seroco Soft | España | | |
| 105 | Serzhsoft | Russia | Шадринск | |
| 106 | Seurasoft | Poland | | |
| 107 | Seven Stars Publishing | Reino Unido | | |
| 108 | Severn Software | | Interceptor Group | | | | |
| 109 | Seymour Systems | Reino Unido | | |
| 110 | SF Group | Russia | Tihvin | |
| 111 | SG Comp |
| 112 | SG Software [2] | Russia | | |
| 113 | SG Team | Russia | Cherkassy | |
| 114 | Shades | | Grandslam Entertainments Ltd | | | | |
| 115 | Shadow Soft | Russia | Новосибирск | |
| 116 | Shadow Software | Reino Unido | | |
| 117 | Shamsoft | Russia | | |
| 118 | Shards Software Ltd | | Kesherweb | | | | |
| 119 | Sharma Software | Reino Unido | | |
| 120 | Sharps Inc | Estados Unidos | | |
| 121 | Shattered Dreams | Denmark | | |
| 122 | Shaun Bebbington | Reino Unido | | |
| 123 | Sheol Software | Reino Unido | | |
| 124 | Sherston Software | Reino Unido | | |
| 125 | Shirekilo Ltd |
| 126 | Shisoft | Russia | Moscow | |
| 127 | Shiva Publishing Ltd | Reino Unido | | |
| 128 | Shock Software | Russia | | |
| 129 | ShockSoftWare | Russia | Киров | |
| 130 | Shodan Software | Reino Unido | | |
| 131 | Shoemakers of Filipp | Russia | | |
| 132 | Shop For Games | Slovakia | | |
| 133 | Shorten Suite Software |
| 134 | Shrap Software | Slovakia | | |
| 135 | Shrsoft | Russia | Rybinsk | |
| 136 | Shulwater Ltd | Reino Unido | | |
| 137 | Shumice Software Company | República Checa | Шумице | |
| 138 | Shura Code Corporation | Russia | | |
| 139 | Shuric Program | Russia | | |
| 140 | Sibcrew | Russia | | |
| 141 | Siberian Group | Russia | Красноярск | |
| 142 | sibKrew | | | |
| 143 | Sidewinder Micro-Systems | Reino Unido | | |
| 144 | Siel UK Ltd | Reino Unido | | |
| 145 | Sierra On-Line | Estados Unidos | | |
| 146 | Sift S.A. | España | | |
| 147 | Siglo XX | España | | |
| 148 | Sigma Soft [1] | Reino Unido | | |
| 149 | Sigma Technical Press | Reino Unido | | |
| 150 | Sigmasoft [2] | Reino Unido | | |
| 151 | Silas Software | Reino Unido | | |
| 152 | Silence Crionix Electronics Entertainment (Scene) | Ukraine | | |
| 153 | Silhouette Software | Reino Unido | | |
| 154 | Silicon Brains | Ukraine | Николаев | |
| 155 | Silicon Brains Software Ltd | Ukraine | | |
| 156 | Silicon Games | España | | |
| 157 | Silicon Joy | | Addictive Games Ltd | | | | |
| 158 | Silicon Kid | Reino Unido | | |
| 159 | Silicon Software | Reino Unido | | |
| 160 | Silva Soft | Russia | | |
| 161 | Silver Fox Communications Ltd | Reino Unido | | |
| 162 | Silver Star Group | Russia | | |
| 163 | Silverbird Software Ltd | | Telecomsoft | | | | |
| 164 | Silverlind Ltd | Reino Unido | | |
| 165 | Silversoft Ltd | | Online PLC | | | | |
| 166 | Sim & BonySoft | Russia | | |
| 167 | Simba Software | Reino Unido | | |
| 168 | simbols | Russia | Гродно | |
| 169 | Simmer Software | Reino Unido | | |
| 170 | Simmons Electronics | Reino Unido | | |
| 171 | Simon Allan Software | | Simon D. Allan | | | | |
| 172 | Simon D. Allan | Reino Unido | | |
| 173 | Simon Micro-Soft |
| 174 | Simon Software | Reino Unido | | |
| 175 | Simon W. Hessel | Reino Unido | | |
| 176 | Simon Wood | Reino Unido | | |
| 177 | SimonSoft | | | |
| 178 | Simple Company | Russia | | |
| 179 | Simply Software | Reino Unido | | |
| 180 | Simsoft | Ukraine | Донецк | |
| 181 | Sinc Masters Creative Group | Russia | Nizhniy Novgorod | |
| 182 | Sinclair Club | Russia | Neftekamsk | |
| 183 | Sinclair Gebruiker | | Micropress [2] | | | | |
| 184 | Sinclair Learning Lab | | | |
| 185 | Sinclair Programs | | ECC Publications Ltd | | | | |
| 186 | Sinclair Research Ltd | | Amstrad | | | | |
| 187 | Sinclair Research Ltd [PT] | | Amstrad | | | | |
| 188 | Sinclair User | | ECC Publications Ltd | | | | |
| 189 | Sinclair User Club | Netherlands | | |
| 190 | Sinclairland | Russia | | |
| 191 | Sindicato del Software |
| 192 | Singular Crew | Hungary | | |
| 193 | Sintax S.A. | España | | |
| 194 | Sirius Group | Russia | Kazan | |
| 195 | Sirius Software | Reino Unido | | |
| 196 | SirotaSoft | Ukraine | | |
| 197 | Sistemas de Informatica e Som Ltda | | | |
| 198 | Sitting Bull Software | Reino Unido | | |
| 199 | Sivis | | Sistemas de Informatica e Som Ltda | | | | |
| 200 | Sizzlers | | Psygnosis Ltd | | | | |
| 201 | SJS Software | Reino Unido | | |
| 202 | Skal Studio | Russia | Пермь | |
| 203 | Skorpyo | España | | |
| 204 | Skrju | Russia | | |
| 205 | SKS Software | Reino Unido | | |
| 206 | SKUAT Soft | España | | |
| 207 | Skusoft | República Checa | | |
| 208 | Sky | Russia | Саранск | |
| 209 | Skyslip Software | Reino Unido | | |
| 210 | Skysoft | Reino Unido | | |
| 211 | SLA Corp Ltd | Poland | | |
| 212 | Slabihoud Software | | Stephan Slabihoud | | | | |
| 213 | SlavJack Software | Russia | Чебоксары | |
| 214 | Slavomir Labsky | Slovakia | | |
| 215 | Slawomir Gebka | | | |
| 216 | Sleepwalkers | Russia | | |
| 217 | Slogger Software | Reino Unido | | |
| 218 | Slow Death Company | | | |
| 219 | Slowglass | España | | |
| 220 | SLUG | Reino Unido | | |
| 221 | SM Indipendant Software | Italy | | |
| 222 | SM Software | Italy | | |
| 223 | Small School Software | Reino Unido | | |
| 224 | Smart Egg Software | Reino Unido | | |
| 225 | Smash H.B. | | | |
| 226 | Smash Hackers Band | Ukraine | Новая Водолага | |
| 227 | Smash Soft | Russia | | |
| 228 | SMB Software | Reino Unido | | |
| 229 | SMC Goldseal Software | | M.A. Smith | | | | |
| 230 | SmileGames | | | |
| 231 | Smiling Assassin | Reino Unido | | |
| 232 | Smokers | Belarus | Минск | |
| 233 | Sneesby Software |
| 234 | SNK-Graphics | Russia | | |
| 235 | Snoopysoft | Germany | | |
| 236 | Soccer Enterprises | Reino Unido | | |
| 237 | Sociedad de Cazadores Pekineses | España | | |
| 238 | Sociedade por Accions | España | | |
| 239 | Sockmonsters Ltd | Reino Unido | | |
| 240 | Socratic Software | Reino Unido | | |
| 241 | Sodom & Gommorah Software | | | |
| 242 | Soft Centre | Reino Unido | | |
| 243 | Soft Concern Ltd | Reino Unido | | |
| 244 | Soft Corn | Reino Unido | | |
| 245 | Soft Design | Reino Unido | | |
| 246 | Soft Hits | | EMAP Business & Computer Publications Ltd | | | | |
| 247 | Soft Joe's Software | Reino Unido | | |
| 248 | Soft Juliet | | Juliet Software | | | | |
| 249 | Soft Machine | Reino Unido | | |
| 250 | Soft Option Ltd | Reino Unido | | |
| 251 | Soft Sell Computer Software | Reino Unido | | |
| 252 | Soft-Music | Germany | | |
| 253 | Softeam | Reino Unido | | |
| 254 | SOFTEC | | Florin Giurcan | | | | |
| 255 | Softechnics | | Softek International Ltd | | | | |
| 256 | Softek | | Softek International Ltd | | | | |
| 257 | Softek International Ltd | | Edge Games Inc | | | | |
| 258 | Softel | Reino Unido | | |
| 259 | Softenterprise | Russia | St.Petersburg | |
| 260 | Softhouse Ltd |
| 261 | Softland | Russia | | |
| 262 | Softlee Systems | Reino Unido | | |
| 263 | Softlink | Reino Unido | | |
| 264 | Softricks | Reino Unido | | |
| 265 | SoftShop International | Reino Unido | | |
| 266 | Softstar | Russia | Moscow | |
| 267 | Softstone Ltd | Reino Unido | | |
| 268 | Softstorm Developments | Reino Unido | | |
| 269 | Softsync Inc |
| 270 | Software AB | | | |
| 271 | Software Amaters | | Peter Machala | | | | |
| 272 | Software Artists | Reino Unido | | |
| 273 | Software Atlantico | España | | |
| 274 | Software BV | | | |
| 275 | Software Center S.A. | España | | |
| 276 | Software Communications Ltd | Reino Unido | | |
| 277 | Software Computer Projects | | | |
| 278 | Software Conversions Ltd | Reino Unido | | |
| 279 | Software Cottage | Reino Unido | | |
| 280 | Software Creations | Reino Unido | Манчестер | |
| 281 | Software Editores | España | | |
| 282 | Software Farm |
| 283 | Software for All | Reino Unido | | |
| 284 | Software for Excellence | Estados Unidos | | |
| 285 | Software Foundation | Reino Unido | | |
| 286 | Software Home | Peru | | |
| 287 | Software Images | Reino Unido | | |
| 288 | Software J&J | España | | |
| 289 | Software Liason | Reino Unido | | |
| 290 | Software mb | España | | |
| 291 | Software Micro Chip S.L. | | | |
| 292 | Software of Sweden | Sweden | | |
| 293 | Software Projects Ltd | Reino Unido | | |
| 294 | Software Publishing Associates | Reino Unido | | |
| 295 | Software Rebels | República Checa | | |
| 296 | Software Saur |
| 297 | Software Solutions | Reino Unido | | |
| 298 | Software Sorcery |
| 299 | Software Spectrum | Italy | | |
| 300 | Software Studio | República Checa | | |
| 301 | Software Studios | Reino Unido | | |
| 302 | Software Supersavers Ltd | | Software Projects Ltd | | | | |
| 303 | Softwarecete | | | |
| 304 | Softwood Programs | Reino Unido | | |
| 305 | Softzone Ltd | Reino Unido | | |
| 306 | SOKOMIND designers | | | |
| 307 | Solar Publishing | Reino Unido | | |
| 308 | Solarsoft | | Sunshine Books Ltd | | | | |
| 309 | Sole Solution Software | Reino Unido | | |
| 310 | SOLI | | Les Systemes d'Ordinateur LOGO Inc | | | | |
| 311 | Solid Image Ltd | Reino Unido | | |
| 312 | Solsoft | Reino Unido | | |
| 313 | Solway Software | Reino Unido | | |
| 314 | Sonic 91 Software | | | |
| 315 | Sonic Graffiti |
| 316 | Sonic Projects | Reino Unido | | |
| 317 | Sonic Soft | Reino Unido | | |
| 318 | Sonic Software | Reino Unido | | |
| 319 | Sony Inc | | | |
| 320 | Sony Music Entertainment | | | |
| 321 | Sorbon Soft | España | | |
| 322 | Soren Borgquist | Denmark | | |
| 323 | SOS Ltd | España | | |
| 324 | Sospan Soft | Reino Unido | | |
| 325 | Sound Images | Reino Unido | | |
| 326 | Sound-on-Sound | | Iberofon S.A. | | | | |
| 327 | Source Software Ltd | Reino Unido | | |
| 328 | Source Solutions, Inc. | | Cheveron Group | | | | |
| 329 | South Coast | Reino Unido | | |
| 330 | Southern Educational Software | Reino Unido | | |
| 331 | Southern Software | Reino Unido | | |
| 332 | Southway Software | Reino Unido | | |
| 333 | Sovereign Software | Reino Unido | | |
| 334 | SP Enterprises |
| 335 | SP Software | Reino Unido | | |
| 336 | Space Age Software | Reino Unido | | |
| 337 | Space Compani | Russia | Moscow | |
| 338 | Space Poison | | | |
| 339 | Space Team Group | Russia | Красноярск | |
| 340 | Spaceballs | France | Орлеан | |
| 341 | Spaceman Ltd | Reino Unido | | |
| 342 | Spacesoft | Netherlands | | |
| 343 | Spark Creative Group | Ukraine | Донецк | |
| 344 | Spark Software | España | | |
| 345 | Sparklers | | Thorn EMI Video Ltd | | | | |
| 346 | Sparrow Books | | Arrow Books Ltd | | | | |
| 347 | Spartan Software | Reino Unido | | |
| 348 | Spartans Sports Association | Reino Unido | | |
| 349 | SPE | | System 4 | | | | |
| 350 | Speccy | | | |
| 351 | Speccy Boyz | Slovakia | Košice | |
| 352 | Speccy.pl | Poland | | |
| 353 | Speccysoft | Reino Unido | | |
| 354 | Special FX Software Ltd | | Rage Software PLC | | | | |
| 355 | Special Playgames | | New Special Playgames | | | | |
| 356 | Special Soft | España | | |
| 357 | Special Team | Slovakia | | |
| 358 | Specialist Programs | Reino Unido | | |
| 359 | Specsoft | Reino Unido | | |
| 360 | Spectra Computing | Germany | | |
| 361 | Spectrasoft | Reino Unido | | |
| 362 | SPECTRAVENTURA | España | | |
| 363 | Spectravision | República Checa | | |
| 364 | Spectraxx Tape Magazine |
| 365 | Spectre | Hong Kong | Минск | |
| 366 | Spectre Guys | | Crystal Dream | | | | |
| 367 | Spectresoft Ltd | Reino Unido | | |
| 368 | Spectrum Adventure Exchange Club | Reino Unido | | |
| 369 | Spectrum Club | Reino Unido | | |
| 370 | Spectrum Computer Info User Club | Germany | | |
| 371 | Spectrum Computing | | Argus Specialist Publications | | | | |
| 372 | Spectrum Discovery Club | Reino Unido | | |
| 373 | Spectrum Electronics | Reino Unido | | |
| 374 | Spectrum Games Ltd | | Ocean Software Ltd | | | | |
| 375 | Spectrum Holdings | Reino Unido | | |
| 376 | Spectrum Microbase | Reino Unido | | |
| 377 | Spectrum Omega Software | | Michal Polak | | | | |
| 378 | Spectrum Pricing | Reino Unido | | |
| 379 | Spectrum Software | Reino Unido | | |
| 380 | Spectrum Unemployed Users Group | | | |
| 381 | Spectrum User |
| 382 | Spectrum Warriors Corp. | Belarus | Гродно | |
| 383 | SpectrumSysWare | Hungary | | |
| 384 | Speculator Software | Reino Unido | | |
| 385 | Speed Company | Russia | Самара | |
| 386 | Speedway | Russia | Воронеж | |
| 387 | Speedwell Software | Reino Unido | | |
| 388 | Spencer Software | Reino Unido | | |
| 389 | Spermasoft Masturbatories |
| 390 | Sphere Software | Reino Unido | | |
| 391 | Spheresoft | Reino Unido | | |
| 392 | Spi-Soft | Reino Unido | | |
| 393 | Spider Games | Reino Unido | | |
| 394 | Spidersoft | Reino Unido | | |
| 395 | Spidersoft [1] | Reino Unido | | |
| 396 | Spidersoft [2] | Reino Unido | | |
| 397 | SpinalSoft | | | |
| 398 | Spindrift Software | Reino Unido | | |
| 399 | Spinnaker Software Corporation | | Broderbund Software | | | | |
| 400 | Spiral | | | |
| 401 | Spiral Software | | Andrey John Remic | | | | |
| 402 | Spirit Software | Reino Unido | | |
| 403 | Spoof Software | Reino Unido | | |
| 404 | Sport & Racing Software | Reino Unido | | |
| 405 | Sportsoft | Reino Unido | | |
| 406 | Sprites | France | | |
| 407 | Sprytes Ltd | Reino Unido | | |
| 408 | SPS Designs | Reino Unido | | |
| 409 | Sputnik | Poland | | |
| 410 | Square Enix | | | |
| 411 | Squaresoft | Russia | | |
| 412 | Ssoft | Reino Unido | Taganrog | |
| 413 | St. Bride's School | | CRL Group PLC | | | | |
| 414 | St. Michael | | Marks & Spencer | | | | |
| 415 | Stack Computer Services Ltd | Reino Unido | | |
| 416 | Stalker |
| 417 | Stall Edition | | Studio Stall | | | | |
| 418 | Stankisoft | Germany | | |
| 419 | StapleSoft | Russia | | |
| 420 | Star Dreams | Reino Unido | | |
| 421 | Star Group | Russia | Йошкар-Ола | |
| 422 | Star Group of Prestige | Russia | | |
| 423 | Star Software | | Tony J. Byrne | | | | |
| 424 | Starbex Systems | Reino Unido | | |
| 425 | Starcade | | Grandslam Interactive Ltd | | | | |
| 426 | Starcrash Software Systems | Reino Unido | | |
| 427 | STARDUST | Russia | Пермь | |
| 428 | Stardust Software | Reino Unido | | |
| 429 | Starfire Hackers Group | Russia | Moscow | |
| 430 | Starlight Software | | Planthills Ltd | | | | |
| 431 | Starlite Software | Reino Unido | | |
| 432 | Stars of Keladan | Russia | Самара | |
| 433 | Stars Software | Reino Unido | | |
| 434 | Stars Spectrum | España | | |
| 435 | Starsoft | Reino Unido | | |
| 436 | Starsoft Educational | Reino Unido | | |
| 437 | StarterSoft | Reino Unido | | |
| 438 | Startgame Soft | España | | |
| 439 | Starzone Software | Reino Unido | | |
| 440 | Stas Vihrov | | | |
| 441 | State Soft Ltd | Reino Unido | | |
| 442 | Static Soft | España | | |
| 443 | Status Software | Reino Unido | | |
| 444 | STD Software | Reino Unido | | |
| 445 | Steam Railway Simulations | Reino Unido | | |
| 446 | steamroller | | | |
| 447 | Steel City Software Engineers | | | |
| 448 | Steel Falcons | Ukraine | Lviv | |
| 449 | Stell Software | Reino Unido | | |
| 450 | Stellar Company Inc | Russia | | |
| 451 | Stellar Company Inc. | Russia | | |
| 452 | Stellar Services | Reino Unido | | |
| 453 | Stellar Software | Reino Unido | | |
| 454 | STEP Creative Group | Russia | Moscow | |
| 455 | Stephan Slabihoud | Germany | | |
| 456 | Stephen Groves | Reino Unido | | |
| 457 | Stephen Hartley Computing | | | |
| 458 | Stephen Hartley Software | Reino Unido | | |
| 459 | Stephen Preston | Reino Unido | | |
| 460 | Sterling Endeavours |
| 461 | Sterling Publications Ltd | | | |
| 462 | Sterling Software | | Sterling Publications Ltd | | | | |
| 463 | Steve A.J. Broad | Reino Unido | | |
| 464 | Steve Dixon | | | |
| 465 | Steve Forde | Reino Unido | | |
| 466 | Steve Lake | Reino Unido | | |
| 467 | Steve McCarthy | Reino Unido | | |
| 468 | Steven J. Howlett | Reino Unido | | |
| 469 | Steven Kendall | Reino Unido | | |
| 470 | StewSoft | República Checa | | |
| 471 | Stichting Impuls | | | |
| 472 | Stichting Scoop Hobbyfonds | | | |
| 473 | Stivsoft | Serbia | | |
| 474 | Stocks & Shares | | | |
| 475 | Stocksoft | Reino Unido | | |
| 476 | Stonechat Productions | | Dave Hughes | | | | |
| 477 | STOP Informatica | Brazil | | |
| 478 | Storm and Tempest | Reino Unido | | |
| 479 | Storm Software [1] | Reino Unido | | |
| 480 | Storm Software [2] | | Sales Curve Ltd | | | | |
| 481 | Stormbringer Software | Reino Unido | | |
| 482 | Stormlord Company | Russia | Томск | |
| 483 | Strange Software | Reino Unido | | |
| 484 | Strangers Group | Russia | Одесса | |
| 485 | Strategic Creative Group | Russia | | |
| 486 | Stratic Software | Reino Unido | | |
| 487 | Stream Hackers | Russia | Moscow | |
| 488 | Streetwise | | Domark Ltd | | | | |
| 489 | Strobe [A Flash of Brilliance] | | UK Software Ltd | | | | |
| 490 | Studak Software | República Checa | | |
| 491 | Studio 'Godness of Destany' | | | |
| 492 | Studio 7 | Latvia | Рига | |
| 493 | Studio B Ltd | | | |
| 494 | Studio Computerowe Koala | Poland | | |
| 495 | Studio Stall | Russia | Первоуральск | |
| 496 | Stuffduck Software | | The Shaw Brothers | | | | |
| 497 | Sty-Detch Crew | Ukraine | | |
| 498 | Style Group | Russia | | |
| 499 | Style Soft | Reino Unido | | |
| 500 | Subway Software | Reino Unido | | |
| 501 | Succes Software | | | |
| 502 | Sugar Loaf Software | Reino Unido | | |
| 503 | Sulis Software Ltd | Reino Unido | | |
| 504 | Summit Software [1] | | Alternative Software Ltd | | | | |
| 505 | Summit Software [2] | Reino Unido | | |
| 506 | Sun Corp. | Russia | | |
| 507 | Sun Soft |
| 508 | Sunrise Electronic Ltd | | | |
| 509 | Sunshine Books Ltd | Reino Unido | | |
| 510 | Sunshine Publications Ltd | | | |
| 511 | Sunteam | | | |
| 512 | Supa Nova Ltd | Reino Unido | | |
| 513 | Super Play Software | Russia | | |
| 514 | Super Sparklers | | Thorn EMI Video Ltd | | | | |
| 515 | Superior Interactive | | | |
| 516 | Superior Software [1] | Reino Unido | | |
| 517 | Superior Software Ltd [2] | | Superior Interactive | | | | |
| 518 | Superscape Ltd | | | |
| 519 | Supersoft | Reino Unido | | |
| 520 | Supersoft [1] | Reino Unido | | |
| 521 | SuperSoft [2] | Romania | | |
| 522 | Supersoft [3] | Germany | | |
| 523 | Supersoft Systems |
| 524 | Supersonic Software Ltd | Reino Unido | | |
| 525 | Surdakar Group | Russia | Rybinsk | |
| 526 | Sussex Software | Reino Unido | | |
| 527 | SUUG | | Spectrum Unemployed Users Group | | | | |
| 528 | Suzy Soft | Croatia | | |
| 529 | SVC Software | Ukraine | | |
| 530 | Svenska Soft Service | Sweden | | |
| 531 | Svet Kompjutera | Serbia | | |
| 532 | Svosatasoft | República Checa | | |
| 533 | Swannsoft | Reino Unido | | |
| 534 | Swiecie Software Company | Poland | | |
| 535 | Sword Software | | Simon Wood | | | | |
| 536 | Sybilasoft | Slovakia | Bratislava | |
| 537 | Sygma Press | | | |
| 538 | Synacroop Software | Reino Unido | | |
| 539 | Sync | | Creative Computing Press | | | | |
| 540 | Syndicate | Ukraine | | |
| 541 | Syndrome | Russia | Пенза | |
| 542 | Synergy | Reino Unido | | |
| 543 | Syntax Software | Reino Unido | | |
| 544 | Syrox |
| 545 | Syrtis Software | Reino Unido | | |
| 546 | Sysoft | Reino Unido | | |
| 547 | System 3 Software Ltd | Reino Unido | | |
| 548 | System 4 | | System 4 de Espana S.A. | | | | |
| 549 | System 4 de Espana S.A. | | | |
| 550 | System Applied Technology | Reino Unido | | |
| 551 | System Software | Reino Unido | | |
| 552 | System-Soft | Reino Unido | | |
| 553 | Systematic | Russia | | |
| 554 | Szafran Soft | | | |
