| HopInFirst | Delhi |
| Hopnet Communications, LLP | |
| Horizon Technology Solutions | Kerala |
| Horizon Webinfo Pvt Ltd | |
| HorizonCore InfoSoft Pvt Ltd | |
| Horizzon Information Technologies Pvt Ltd | Maharashtra |
| Hormaz Marketing and Brand Consultancy | |
| Hornet Dynamics | |
| Host Miditech, LLP | Uttar Pradesh |
| Host Net India | Rajasthan |
| Host The Web | Uttar Pradesh |
| Host Zyro Pvt Ltd | Karnataka |
| Host.co.in | Maharashtra |
| Host4Asia | Delhi |
| HostDrome Technologies | |
| Hostech Support | Maharashtra |
| HostForNet.com | Maharashtra |
| HostIndia.net | Maharashtra |
| Hosting Support Guru | Gujarat |
| Hosting.India.to | Rajasthan |
| HostingFarms.com, LLC | Punjab |
| HostingInIndia | Gujarat |
| HostingITrust | Delhi |
| HostingN | |
| HostJinni.Com | Uttar Pradesh |
| HostMacro Web Services | Tamil Nadu |
| HostOnNet.com | Kerala |
| hostrs.com | Delhi |
| Hotdak | Chandigarh |
| Hotspot Express | Tamil Nadu |
| Hotweb | Maharashtra |
| Hourglass IT Solutions Pvt Ltd | |
| Hourglass IT Solutions Pvt Ltd | |
| HourlyDeveloper | |
| How To Buy SAAS | |
| How to Digital | Maharashtra |
| HowAboutThat | |
| HP Software Technology Pvt Ltd | Madhya Pradesh |
| HRAPP | Tamil Nadu |
| Hridayam Soft Solutions Pvt Ltd | Maharashtra |
| HSBC India | Maharashtra |
| HT Media | |
| HTACPL | Uttar Pradesh |
| HTSM Technologies Pvt Ltd | West Bengal |
| Hub Media | West Bengal |
| Hubler Pvt Ltd | Karnataka |
| Huddle Ventures | Haryana |
| Huge H Web Services Pvt Ltd | Maharashtra |
| Hughes Communications India Ltd | Haryana |
| Human Space Flight Centre | |