| 101domain GRS Ltd | Dublin City Council |
| 101PluS | |
| 1Network.ie | |
| 1time | Dublin City Council |
| 2020 | Dún Laoghaire-Rathdown County Council |
| 249 Design Studio | Dublin City Council |
| 2Cubed | |
| 360 Search | |
| 360 Sites | |
| 3D Issue | Dublin City Council |
| 3dcadsoft Ltd | |
| 42Crunch Ltd | |
| 4PM.ie | Dublin City Council |
| 4Securitas | |
| 511 Tech Solutions | Dublin City Council |
| 8 West Consulting | Cork City Council |
| 8bytes | |
| Abbey Software Technologies Ltd | |
| AbbeyIT | Limerick City and County Council |
| Abi Global Health Ltd | |
| Ablecom & Co. Ltd | South Dublin County Council |
| Abodoo | |
| Abrel Products Ltd | Limerick City and County Council |
| Abú Internet Ltd | Cork County Council |
| Accelerated Payments Ltd | |
| Accelerator Team | |
| Accenture | Dublin City Council |
| Accountancy Software | |
| Act Venture Capital Ltd | |
| Action Point Ltd | Limerick City and County Council |
| ADAPT Research Centre | Dublin City Council |
| Adaptive Mobile | Dublin City Council |
| ADC Barcode | South Dublin County Council |
| Adison.ai | |
| Advance Design | Dublin City Council |
| Advance Systems Ireland | South Dublin County Council |
| Advanced Field Solutions | Dún Laoghaire-Rathdown County Council |
| Advanced Radio Mapping | |
| Aerogen | |
| Aerospace Software Developments Ltd | |
| Affordable Websites | |
| Afilias, Inc. | Dublin City Council |
| Afimmune Ltd | |
| AGENT Media Communications Ltd | Limerick City and County Council |
| Agile Digital Strategy Ltd | |
| Agile Networks Ltd | |
| AgriNet | |
| AI Tools Directory | |
| AID:Tech | Dublin City Council |
| AirSpeed Ltd | Dublin City Council |