| Silvery Infotech | |
| Simba Infotech | |
| Simfatic Solutions Pvt Ltd | Karnataka |
| SIMIC Electronics Pvt Ltd | Maharashtra |
| Siminfox Technologies | |
| Simoco Telecommunications (South Asia) Ltd | West Bengal |
| Simpl | Karnataka |
| Simple Intelligent Systems | Uttar Pradesh |
| Simple Lecture | |
| Simple SEO India | |
| Simple Words | |
| Simpleefly | |
| Simpleenergy Pvt Ltd | |
| SimplePlan Solutions Pvt Ltd | |
| Simplesoft Technologies India Pvt Ltd | Maharashtra |
| Simplicity Softwares | Gujarat |
| Simplify | |
| Simplify3X Software Pvt Ltd | |
| Simplior Technologies Pvt Ltd | |
| SimpliSage Technologies Pvt Ltd | |
| Simply Syntax Technologies | West Bengal |
| SimplyFI | |
| Simpragma Solutions Pvt Ltd | |
| Simption Tech Pvt Ltd | |
| Simson Softwares Pvt Ltd | |
| Simulanis Solutions Pvt Ltd | Delhi |
| Simulas | |
| Simuna Infosec Pvt Ltd | |
| SINA Mobility | |
| Sinaitech | Telangana |
| SIND Technologies Pvt Ltd | Telangana |
| Sindhi College | |
| Sinergia Media Labs Pvt Ltd | |
| Sinewave Computer Services Pvt Ltd | Maharashtra |
| Singala Infotech | |
| Singhania University | |
| SingleInterface | Haryana |
| Singodia Electronics Pvt Ltd | Delhi |
| Sinontech | Gujarat |
| Sinsan Pharmaceuticals Pvt Ltd | |
| Sinsignal Technologies Pvt Ltd | |
| SINSS | Maharashtra |
| Siply Services Pvt Ltd | Karnataka |
| Sipna College of Engineering and Technology, Amravati | |
| Sipra Labs Ltd | |
| Siptech Solutions Ltd | Tamil Nadu |
| Sir Gurudas Mahavidyalaya | |
| Sir M Visvesvaraya Institute of Technology | Karnataka |
| Sir P. T. Sarvajanik College of Science | |
| Sir Padampat Singhania University | |