| Hostromo Group, s.r.o. | |
| Hotovo, s.r.o. | |
| Hotwire webhosting | Žilina |
| Hour, spol. s r.o. | Žilina |
| Hriko.sk | |
| HubHub | Bratislava |
| HULMAN design studio, s.r.o. | Žilina |
| Hurican.sk | Bratislava |
| Hweld, s.r.o. | |
| HWiNFO | Bratislava |
| I.S.D.D. plus, s.r.o. | |
| IBL Software Engineering | Bratislava |
| ICP, s.r.o. | Žilina |
| iERP.ai | |
| IMCO POWER, s.r.o. | Bratislava |
| Impact HUB Bratislava | |
| Impact, s.r.o. | |
| Inac.SK | Bratislava |
| Incoma Slovakia, s.r.o. | |
| Incos | |
| INDASTRY, s.r.o. | Bratislava |
| Inet.sk, s.r.o. | Banská Bystrica |
| Info consult, s.r.o. | |
| Infopro, s.r.o. | Bratislava |
| INFOTECH, s.r.o. | |
| Ing. Drahomír Polák - Polaris | Trnava |
| Ing. Rastislav Ďurica SOVACOMP | Banská Bystrica |
| Ing. Štefan Ádám ADAM-SOFT | Banská Bystrica |
| Inlogic Software | Banská Bystrica |
| InNET, s.r.o. | |
| Innocent Store, s.r.o. | Košice |
| Innovate Slovakia | |
| Innovatrics | Bratislava |
| InoBat | |
| Inoma Comp, s.r.o. | |
| Inomanet, s.r.o. | Banská Bystrica |
| INOTESKA, s.r.o. | Žilina |
| Insar.sk Ltd | |
| InSYS, spol. s r.o. | Trenčín |
| Intelsoft, s.r.o. | |
| Internetová Reklamná Agentúra | Nitra |
| InterWay, a.s. | Bratislava |
| Inver Software | Košice |
| Investment Support Association | |
| INWARE, s.r.o. | Trnava |
| IP Security Consulting, s.r.o. | Banská Bystrica |
| IPA Slovakia, s.r.o. | |
| Ipartner | |
| Ipesoft | |
| iPshop, s.r.o. | Bratislava |