| Sofdelux Studio | Developer | |
| Sofia Abatangelo | Developer | |
| Sofia Romualdo | Developer | |
| Sofie Magnusson | Developer | |
| SofieKSchmidt | Developer | |
| Sofix | DeveloperPublisher | |
| Sofronas | Developer | |
| Sofsource, Inc. | Publisher | |
| Soft Action | Developer | |
| Soft Bank | DeveloperPublisher | |
| Soft BankJP | Publisher | |
| Soft Enterprises | DeveloperPublisher | |
| Soft Hornet | Developer | |
| Soft House | Developer | |
| Soft House Aladdin | DeveloperPublisher | |
| Soft House Bon bee Bon Bon | DeveloperPublisher | |
| Soft Lava | Developer | |
| Soft Machine | Developer | |
| Soft Office | DeveloperPublisher | |
| Soft Option | Developer | |
| Soft Plan | DeveloperPublisher | |
| Soft Pro | Publisher | |
| Soft Pro International | Publisher | |
| Soft Studio Wing | DeveloperPublisher | |
| Soft Vision | DeveloperPublisher | |
| Soft Vision International / Coconuts Japan (JP) | Publisher | |
| Soft VisionJP | Publisher | |
| Soft-World | DeveloperPublisher | |
| Soft-World International | Publisher | |
| SoftBank | Publisher | |
| SoftColors | Developer | |
| SoftCore | Developer | |
| SoftFrame | Developer | |
| SoftGold Dotsoft | Publisher | |
| SoftKey | Publisher | |
| SoftLab Laboratories | DeveloperPublisher | |
| SoftLeafStudios | Developer | |
| SoftMax | DeveloperPublisher | |
| SoftServ, Inc. | Developer | |
| SoftSide | Publisher | |
| SoftStar | DeveloperPublisher | |
| Softalk | Publisher | |
| Softbank Corp. | Publisher | |
| Softdisk | DeveloperPublisher | |
| Softdisk (unreleased)[18] | Publisher | |
| Softdisk Publishing | Publisher | |
| Softeam | Developer | |
| Softek | Publisher | |
| Softek International (Christian F. Urquhart, Doc) | Developer | |
| Softel (Clive Wilson, Les Hogarth) | Developer | |