| Simple Machines | Simple Machines Forum | 8 |
| Xeroxer | Simple One-File Gallery | 2 |
| Alexander Palmo | Simple Php Blog | 2 |
| Simple Php Forum | Simple Php Forum | 2 |
| Cromosoft | Simple Plantilla Php | 2 |
| Cms-Center | Simple Web Cms | 1 |
| Parkview Consultants | Simplefaq | 1 |
| Simplegallery | Simplegallery | 1 |
| Simplenews | Simplenews | 3 |
| Boesch-It | Simpnews | 2 |
| Simpnews | Simpnews | 1 |
| Sina | Sina | 1 |
| Scripter.Ch | Sinapis Forum | 1 |
| Sinecms | Sinecms | 3 |
| Sing | Sing | 1 |
| Avaya | Sip Enablement Services | 1 |
| Grandstream | Sip Phone | 1 |
| Nortel | Sip Softphone | 1 |
| Sircd | Sircd | 1 |
| Wordpress | Sirius | 1 |
| Sisfo Kampus | Sisfo Kampus | 2 |
| Sisplet Cms | Sisplet Cms | 1 |
| Dmxready | Site Engine Manager | 1 |
| Site-Assistant | Site-Assistant | 1 |
| Siteatschool | Siteatschool | 1 |
| Sitebar | Sitebar | 7 |
| Sitedepth | Sitedepth Cms | 1 |
| Simian Systems Inc | Sitellite | 1 |
| Simian Systems Inc | Sitellite Cms | 1 |
| Siteman | Siteman | 2 |
| Sitescape | Sitescape Forum | 1 |
| Sitescape | Sitescape Forum St | 1 |
| Sitescape | Sitescape Forum Zx | 1 |
| Positive Software | Sitestudio | 1 |
| Sitesys | Sitesys | 1 |
| Sitetrafficstats | Sitetrafficstats | 1 |
| Siteup | Siteup | 1 |
| Bj Sintay | Sitex | 3 |
| Sitex | Sitex | 1 |
| Sitex | Sitex Cms | 1 |
| Sitex Cms Project | Sitex Cms | 1 |
| Sj Labs | Sjphone | 2 |
| Sk.Log | Sk.Log | 1 |
| Skadate | Skadate Online Dating Software | 1 |
| Skalinks | Skalinks | 1 |
| Signkorea | Skcommax Activex Control | 2 |
| Skk Openlab | Skk Tools | 1 |
| Skulltag Team | Skulltag | 1 |
| Skyfex | Skyfex Client | 1 |
| Skype Technologies | Skype | 2 |
| Skyportal | Skyportal | 1 |
| Slackroll | Slackroll | 1 |
| Slackware | Slackware | 1 |
| Slackware | Slackware Linux | 2 |
| Slaed | Slaed Cms | 1 |
| Solidworks | Sldimdownload Activex Control | 1 |
| Fenrir | Sleipnir | 2 |
| Flashpeak | Slim Browser | 1 |
| Slocate | Slocate | 1 |
| Bluevirus-Design | Sma-Db | 1 |
| Sophos | Small Business Suite | 2 |
| Tibco | Smart Pgm Fx | 2 |
| Scriptsez | Smart Php Subscriber | 1 |
| Smart-Shop | Smart-Shop | 1 |
| Smartftp | Smartftp | 2 |
| Supportsoft | Smartissue | 1 |
| Smartsitecms | Smartsitecms | 1 |
| Smarty | Smarty | 2 |
| Smb4K | Smb4K | 4 |
| Smbftpd | Smbftpd | 1 |
| Scriptme | Sme Filemailer | 1 |
| Smodbip | Smodbip | 1 |
| Smodcms | Smodcms | 1 |
| Alstrasoft | Sms Text Messaging Enterprise | 1 |
| Netapp | Snapcenter | 1 |
| Snaps Gallery | Snaps Gallery | 1 |
| Snews | Snews | 1 |
| Snewscms | Snewscms Rus | 1 |
| Snitz Communications | Snitz Forums 2000 | 4 |
| Castle Rock Computing | Snmpc | 1 |
| Snom | Snom 320 Linux | 2 |
| Electronic Arts | Snoopyctrl | 1 |
| Snort | Snort | 4 |
| Softdiv Softare | Snosh | 1 |
| Baidu | Soba Search Bar | 1 |
| Social Engine | Social Engine | 1 |
| Datecomm | Social Networking Script | 2 |
| Psi-Labs | Social Networking Script Psisns | 1 |
| Socketkb | Socketkb | 1 |
| Socketmail | Socketmail | 2 |
| Softbizscripts | Softbiz Auctions Script | 1 |
| Softbizscripts | Softbiz Jobs And Recruitment Script | 1 |
| Safenet | Softremote Vpn Client | 1 |
| Brain Book Software | Software Secure | 1 |
| Apple | Software Update | 1 |
| Hp | Software Update | 1 |
| Solar Empire | Solar Empire | 1 |
| Oracle | Solaris | 1 |
| Sun | Solaris | 48 |
| Solarpay | Solarpay | 1 |
