| ID | Name | Type |
|---|---|---|
| #22011 | Scavenger | + |
| #13010 | Sceiron | Z |
| #13011 | Scelbi Computer Consulting Inc | Z |
| #13012 | Scelbi Publications | Z |
| #13013 | Scele & Ufo Software | Z |
| #13014 | Scene+ | ? |
| #13015 | Scetlander | ? |
| #13016 | Schafft | ? |
| #13017 | Schiva | ? |
| #13018 | Scholastic Inc | Z |
| #13019 | Scholastic Library Publishing | Z |
| #13020 | Scholastic Ltd | Z |
| #13021 | Schoningh | ? |
| #17687 | School Monitor | M |
| #13022 | Schreiber | ? |
| #13023 | Schultze | ? |
| #13024 | SciCAL Software Ltd | Z |
| #13025 | Scicon | ? |
| #13026 | Scientific Software | Z |
| #13027 | Scimitar Software | Z |