| Hearne Software | Victoria |
| Hedley Digital | Victoria |
| Helbig Consulting | Victoria |
| Helios Power Solutions | New South Wales |
| Helix Technologies | Western Australia |
| Hello Clever | New South Wales |
| Hello Code | |
| Hello People | Western Australia |
| Help Desk Software Australia | Australian Capital Territory |
| Hemdahl | |
| Hendon Semiconductors | South Australia |
| Hendrik-Jan Schoenmaker | |
| Henge Systems | New South Wales |
| Hereditree Pty Ltd | Victoria |
| Hewstone I.T. | Victoria |
| Hexagon Technology Pty Ltd | Victoria |
| HeyLink.me | New South Wales |
| Hi-Voltage Corporations Pty Ltd | Victoria |
| Hiary | New South Wales |
| Hide and Seek Digital | Australian Capital Territory |
| Hide and Seek Digital | |
| High Earth Orbit Robotics Pty Ltd | New South Wales |
| Highland Creative | New South Wales |
| Highlands by Design | New South Wales |
| Highperformance Network | New South Wales |
| Hillrise Group | South Australia |
| Hills Web Design | New South Wales |
| Hilltop-Mail | New South Wales |
| Himalayas | New South Wales |
| Hinterlands Consultancy Pty Ltd | New South Wales |
| Hipfish Enterprises Pty Ltd | Queensland |
| Hippo Creative | South Australia |
| Hire Intelligence | New South Wales |
| HirePOS | Queensland |
| Hitec Phone Systems | Queensland |
| HIVERY | New South Wales |
| HL7 Australia | Australian Capital Territory |
| Holding Redlich | Victoria |
| Holmes Institute | Victoria |
| Home Money Manage | Western Australia |
| HomePage Development | Queensland |
| Hopping Mad Designs Pty Ltd | New South Wales |
| Hopscotch Media Pty Ltd | Victoria |
| Horizon Wireless | New South Wales |
| Hornsby TAFE IT Department | New South Wales |
| Host Group of Companies Pty Ltd | Queensland |
| Hostnexus | Victoria |
| Hot Time Software | Queensland |
| Hot Toner | New South Wales |
| HotAir Conferencing Pty Ltd | Victoria |