| Automsoft International Ltd | Dublin City Council |
| Avames | |
| Avectas | |
| Avena | Cork County Council |
| Aviate Systems | |
| Avolon | |
| Avvio | Limerick City and County Council |
| AWEB Digital Agency | |
| Awescape | |
| AxisBic | |
| Axonista | |
| AxonWare Ltd | Dublin City Council |
| Aylien Ltd | Dublin City Council |
| Azotel Technologies | Cork City Council |
| b-wave.io | |
| B2B Communications | |
| BackupVault | Dún Laoghaire-Rathdown County Council |
| Bad Wolf Software | Kildare County Council |
| Baker Security & Networks | Dublin City Council |
| Baldwin Digital Ltd | |
| Bamboo | |
| Bandwidth Telecommunications | Dublin City Council |
| Banshee Apps | |
| Barclays | |
| BarooSoftware.com | |
| Barrcloud | |
| Basesite | |
| Battery Associates | Dublin City Council |
| Baumeister Mediasoft Engineering | Dublin City Council |
| Baxter Technologies Ltd | |
| Beanstalk Digital | |
| Bective Automation Ltd | |
| Beecher Networks Ltd | Cork City Council |
| BeFound SEO | |
| BeMoore Web Solutions Ltd | Cork City Council |
| Benetel Ltd | Dublin City Council |
| Beyond Now | |
| BH Consulting | |
| BHSL | |
| Big Bang Design Ltd | |
| Big Dog | |
| Big Red Cloud Ltd | |
| Big Top Multimedia | South Dublin County Council |
| BigNet Design Ltd | Dublin City Council |
| Binamico | |
| Binarii Labs | |
| Binate Digtial | |
| Bio Pharma Technical Consulting | |
| BioProbe Diagnostics Ltd | |
| BioSimulytics | |