| GIGtech | Gauteng |
| Gijima (Pty) Ltd | Gauteng |
| GindstoneXL | Western Cape |
| Gist (Pty) Ltd | Western Cape |
| Givit Software and Web Design (Pty) Ltd | |
| Glacier Consulting | Gauteng |
| Glink | KwaZulu-Natal |
| Global Micro Solutions (Pty) Ltd | Gauteng |
| Global Sense | Gauteng |
| Global Synapse | Western Cape |
| globalCom SA | Gauteng |
| Globex Internet Services | Gauteng |
| GlobSky ISP | Western Cape |
| GLS Consulting (Pty) Ltd | Western Cape |
| Gnu World | Western Cape |
| Go Rentals | Gauteng |
| Golden Smile Dark Heart | Western Cape |
| Goldtel Industries (Pty) Ltd | Gauteng |
| GoodX Enterprises (Pty) Ltd | Gauteng |
| Gorilla Phones SA | Gauteng |
| Gracan Communications | KwaZulu-Natal |
| Graffo (Pty) Ltd | |
| Grapevine | Western Cape |
| Graphic Image Technologies | Gauteng |
| Graphics Designer | Free State |
| Gravit8 | Western Cape |
| Graylink | Western Cape |
| Grey Pebbles Design Studio | Gauteng |
| Greycell | KwaZulu-Natal |
| Gridweb (Pty) Ltd | |
| GrindrodBank | KwaZulu-Natal |
| Grunter Services | |
| Gsolutions | Western Cape |
| GuruHut | Gauteng |
| HaDeDa | |
| HAL 9000 Systems (Pty) Ltd | Gauteng |
| Hamonate | Gauteng |
| Hashtag South Africa | Gauteng |
| HB IT Solutions | Western Cape |
| HeliosDesign | Gauteng |
| Hellocomputer | Gauteng |
| Herotel | Western Cape |
| Hetjou! Web Design | |
| HG Bosch & Associates | Gauteng |
| Hi-Q Electronics | Western Cape |
| Hi-Tech Recruitment | Gauteng |
| High Tech Impressions (Pty) Ltd | Gauteng |
| HKWeb | Gauteng |
| Hole-In-One Business Solutions | Gauteng |
| Holomatrix | KwaZulu-Natal |