| SCI Games : | www.sci.co.uk |
| Sega Corporation : | www.sega.com |
| Segasoft : | www.segasoft.com |
| Sensible Software : | www.sensiblesoftware.com |
| Shepherd's Worlds : | www.shepworlds.com |
| Shiny Entertainment : | www.shiny.com |
| Sierra Interactive : | www.sierra.com |
| Silver Creek Entertainment : | www.silvercrk.com |
| Silver Lightning : | www.silverlightning.com |
| Simutronics Corporation : | www.play.net |
| Sirtech : | www.sir-tech.com |
| Sleeplees Software : | www.sleeplees.com |
| Smart Games : | www.smartgames.com |
| Softdisk Publishing : | www.sofdisk.com |
| Soft Enterprises : | www.soft-enterprises.com |
| Sony Entertainment : | www.sony.com |
| Sound Source Interactive : | www.asyluminc.com |
| SouthPeak Interactive : | www.southpeak.com |
| Spectrum Pacific : | www.spectrumpacific.com.au |
| Stardocks Software : | www.stardock.com |
| Starplay Games : | www.starplay.com |
| Starwave Corporation : | www.starwave.com |
| Strategic Simulations : | www.ssionline.com |
| Strategic Studies Group : | www.ssg.com.au |
| Strategy First : | www.strategyfirst.com |
| Sunstorm Interactive : | www.888sunstorm.com |
| Synthetic Dimensions : | www.syndime.com |