| Siena College of Taytay | |
| Silicon Valley Computer Group Phils, Inc. | Metro Manila |
| Silliman University | |
| Simple Softech Solutions Co. | |
| Skella Innovations | |
| Skyrocket Studio PH, Inc. | Metro Manila |
| SleekFast | |
| Smart Communications, Inc. | |
| SmartBite | |
| Snowweb.net | Rizal |
| Software Development Corporation | Metro Manila |
| Software Ventures International | Metro Manila |
| Software Ventures International | |
| Something Techie | Samar |
| SonnyDesign | |
| Southeast Asia Interdisciplinary Development Institute | |
| Southern Philippines Agri-Business and Marine and Aquatic School of Technology | |
| SparkSoft Solutions, Inc. | |
| SPD Business Solutions | |
| Spearhead | Metro Manila |
| SpeedFusion Networks | Cebu |
| Spiralytics | |
| Springboard Philippines | Metro Manila |
| Springboard Philippines | |
| Sprout Solutions Philippines, Inc. | Metro Manila |
| Squeaky Wheel | |
| St Paul University Iloilo | |
| St. Augustine School of Nursing | |
| St. Louis College Valenzuella | |
| St. Paul College of Ilocos Sur | |
| St. Paul College Pasig | |
| St. Paul University Dumaguete | |
| St. Paul University Manila | |
| St. Paul University Philippines | |
| St. Paul University Quezon City | |
| St. Paul University Surigao | |
| St. Scholastica's College Manila | |
| Staff Domain | |
| Star Communications Holdings Corporation | Metro Manila |
| Starfish | Metro Manila |
| Startechup, Inc. | Cebu |
| Stash Philippines | Metro Manila |
| STI College | |
| Stikadoo | Surigao del Norte |
| StraightArrow Corporation | Metro Manila |
| Strategic Works, Inc. | Metro Manila |
| Stratpoint Technologies, Inc. | Metro Manila |
| Sultan Kudarat State University | |
| Sun Cellular | Metro Manila |
| Surigao del Norte State University | |