| Secure Computing | 2 | 7 |
| Secure E-commerce Script Project | 1 | 1 |
| Secure Elements | 2 | 14 |
| Secure Password Hashes Project | 1 | 1 |
| Secure Reality | 1 | 2 |
| Secureauth | 2 | 2 |
| Securebrain | 1 | 1 |
| Securecomputing | 10 | 22 |
| Secureideas | 2 | 19 |
| Securekit | 1 | 1 |
| Securemoz | 1 | 1 |
| Securenvoy | 2 | 9 |
| Secureol | 1 | 1 |
| Securepoint | 2 | 7 |
| Securew2 | 1 | 1 |
| Securifi | 4 | 40 |
| Securimage-WP-Fixed | 1 | 1 |
| Securitashome | 1 | 2 |
| Security Roots Ltd | 1 | 1 |
| Security-framework Project | 1 | 1 |
| Security Questions Project | 1 | 1 |
| Securitycamera | 1 | 1 |
| Securityonion | 1 | 3 |
| Securityonionsolutions | 1 | 1 |
| Securonix | 1 | 2 |
| Securstar | 1 | 1 |
| Secustar | 1 | 1 |
| Secustick | 1 | 1 |
| Secutech Project | 3 | 3 |
| Secvisogram | 2 | 2 |
| Seczetta | 1 | 2 |
| SedLex | 3 | 3 |
| See-commerce | 1 | 1 |
| SeeLook | 1 | 1 |
| Seeblick | 1 | 1 |
| Seed Webs | 1 | 1 |
| Seeddms | 1 | 29 |
| Seedprod | 1 | 1 |
| Seeds | 1 | 3 |
| Seeds Co.,Ltd. | 1 | 2 |
| Seeftl Project | 1 | 1 |
| Seeon | 1 | 1 |
| Seerox | 1 | 1 |
| Seesaw | 1 | 1 |
| Seeyon | 1 | 1 |
| Sefrengo | 1 | 4 |
| Sega | 2 | 2 |
| Segger | 1 | 1 |
| Segment | 1 | 1 |
| Segmentio | 1 | 1 |
| Segue Cms | 1 | 6 |
| Segue Project | 1 | 2 |
| Seh | 1 | 1 |
| Seiji42 | 1 | 1 |
| Seiko Solutions Inc. | 4 | 9 |
| Seiko-sol | 3 | 8 |
| Seil | 5 | 5 |
| Seir Anphin | 1 | 1 |
| Sejoong Namo | 2 | 4 |
| Sela Project | 1 | 9 |
| Selbstzweck | 1 | 2 |
| Select2 | 1 | 1 |
| Select Development Solutions | 2 | 2 |
| Select Your College Script Project | 1 | 1 |
| Selectize-plugin-a11y Project | 1 | 1 |
| Selena Sol | 2 | 2 |
| Selenium | 1 | 3 |
| Self Drive Rental Project | 1 | 1 |
| Selfget | 1 | 1 |
| Selfwealth | 1 | 2 |
| Selinc | 7 | 11 |
| Seling | 1 | 9 |
| Selinux | 1 | 7 |
| Selinux Project | 1 | 7 |
| Selinuxproject | 1 | 2 |
| Sellatsite | 2 | 3 |
| Sellatsite.com | 1 | 2 |
| Selom Ofori | 1 | 4 |
| Seltmann-webdesign | 1 | 16 |
| Sem-cms | 1 | 32 |
| Semaintoken Project | 1 | 1 |
| Semantic-mediawiki | 1 | 1 |
| Semanticforms Project | 1 | 2 |
| Semanticscuttle | 1 | 5 |
| Semantictitle Project | 1 | 1 |
| Semcosoft | 1 | 1 |
| Semi | 1 | 1 |
| Semper Plugins, LLC | 1 | 1 |
| Semper Invicta Fitness Project | 1 | 1 |
| Semperfiwebdesign | 1 | 4 |
| Semperplugins | 1 | 4 |
| Semver-tags Project | 1 | 1 |
| Senao | 1 | 1 |
| Senatorinn | 1 | 1 |
| Sencha | 2 | 52 |
| Send-anywhere | 1 | 1 |
| SendGrid | 1 | 1 |
| SendPress | 1 | 4 |
| SendPulse | 1 | 1 |
| Send Project | 1 | 1 |
