| GSGems Sensors | Plainville | CT | Computer and Electronic Product Manufacturing334513 | 100-499 | ◐ LIKELY ACTIVE |
| BMBirk Manufacturing, INC. | East Lyme | CT | Computer and Electronic Product Manufacturing334419 | 100-499 | ◐ LIKELY ACTIVE |
| CIClinton Instrument CO the | Clinton | CT | Computer and Electronic Product Manufacturing334419 | 1-19 | ◐ LIKELY ACTIVE |
| FEFuelcell Energy INC | Danbury | CT | Computer and Electronic Product Manufacturing334413 | 100-499 | ◐ LIKELY ACTIVE |
Glacier Computer LLC | New Milford | CT | Computer and Electronic Product Manufacturing334111 | — | ◐ LIKELY ACTIVE |
| PCPalco Connector, INC | Naugatuck | CT | Computer and Electronic Product Manufacturing334417 | 20-99 | ◐ LIKELY ACTIVE |
| RTRfs Technologies, INC. | Meriden | CT | Computer and Electronic Product Manufacturing334220 | 100-499 | ◐ LIKELY ACTIVE |
| TPTtm Printed Circuit Group, INC. | Stafford | CT | Computer and Electronic Product Manufacturing334412 | — | ◐ LIKELY ACTIVE |
| UEUnison Engine Components | Manchester | CT | Computer and Electronic Product Manufacturing334511 | — | ◐ LIKELY ACTIVE |
| AMAdvanced Micro Controls, INC. | Terryville | CT | Computer and Electronic Product Manufacturing334513 | — | ◐ LIKELY ACTIVE |
American Computer Development, Incorporated | Branford | CT | Computer and Electronic Product Manufacturing334418 | — | ◐ LIKELY ACTIVE |
| CCClassic Coil Company | Bristol | CT | Computer and Electronic Product Manufacturing334416 | 20-99 | ◐ LIKELY ACTIVE |
Conoptics INC | Danbury | CT | Computer and Electronic Product Manufacturing334510 | — | ◐ LIKELY ACTIVE |
Lucca Ventures, INC. | Southington | CT | Computer and Electronic Product Manufacturing334290 | — | ◐ LIKELY ACTIVE |
| PAPeak Antennas LLC | Monroe | CT | Computer and Electronic Product Manufacturing334220 | — | ◐ LIKELY ACTIVE |
| AAccutron | Windsor | CT | Computer and Electronic Product Manufacturing334418 | 20-99 | ◐ LIKELY ACTIVE |
| AIAi-tek Instruments LLC | Cheshire | CT | Computer and Electronic Product Manufacturing334519 | — | ◐ LIKELY ACTIVE |
| ANAmphenol Nexus Technologies, INC. | Stamford | CT | Computer and Electronic Product Manufacturing334417 | 20-99 | ◐ LIKELY ACTIVE |
| AIAshcroft INC | Stratford | CT | Computer and Electronic Product Manufacturing334513 | — | ◐ LIKELY ACTIVE |
| AIAtlantic Inertial Systems INC | Cheshire | CT | Computer and Electronic Product Manufacturing334511 | — | ◐ LIKELY ACTIVE |
| CICoherent, Inc - East Granby | East Granby | CT | Computer and Electronic Product Manufacturing334510 | 1-19 | ◐ LIKELY ACTIVE |
| EMElectro Mechanical Specialists, LLC | Bozrah | CT | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| HFHoneywell Fire Safety | Northford | CT | Computer and Electronic Product Manufacturing334290 | 500+ | ◐ LIKELY ACTIVE |
| IEImperial Electronic Assembly, INC. | Brookfield | CT | Computer and Electronic Product Manufacturing334418 | 100-499 | ◐ LIKELY ACTIVE |
| MAMax Analytical Instruments | East Windsor | CT | Computer and Electronic Product Manufacturing334513 | 1-19 | ◐ LIKELY ACTIVE |
| PEPerkin Elmer Health Sciences | Shelton | CT | Computer and Electronic Product Manufacturing334516 | — | ◐ LIKELY ACTIVE |
| SASmiths Aerospace Components | Manchester | CT | Computer and Electronic Product Manufacturing334511 | — | ◐ LIKELY ACTIVE |
| 9D908 Danbury | Danbury | CT | Computer and Electronic Product Manufacturing334516 | 20-99 | ◐ LIKELY ACTIVE |
| APAb Photonics Incorporated | Guilford | CT | Computer and Electronic Product Manufacturing334510 | — | ◐ LIKELY ACTIVE |
| AAAragra - AB Electronics LLC | Brookfield | CT | Computer and Electronic Product Manufacturing334418 | 20-99 | ◐ LIKELY ACTIVE |
| BVBi-Metallix Vishay Dale Electronics | East Windsor | CT | Computer and Electronic Product Manufacturing334416 | 20-99 | ◐ LIKELY ACTIVE |
| BBrookfield | Brookfield | CT | Chemical Manufacturing325193 | 100-499 | ◐ LIKELY ACTIVE |
| CICoherent, Inc - Bloomfield | Bloomfield | CT | Computer and Electronic Product Manufacturing334510 | 100-499 | ◐ LIKELY ACTIVE |
| CHCt112 Haydon Kerk | Waterbury | CT | Computer and Electronic Product Manufacturing334513 | 100-499 | ◐ LIKELY ACTIVE |
| CACt194 Ametek Magnetrol Usa, LLC | Naugatuck | CT | Computer and Electronic Product Manufacturing334514 | 20-99 | ◐ LIKELY ACTIVE |
| CSCyber-hack Solutions LLC | Middletown | CT | Computer and Electronic Product Manufacturing334511 | — | ◐ LIKELY ACTIVE |
| EMESCO Maritime Solutions | Wallingford | CT | Computer and Electronic Product Manufacturing334416 | 20-99 | ◐ LIKELY ACTIVE |
| GDGeneral Datacomm, INC. | Oxford | CT | Computer and Electronic Product Manufacturing334290 | — | ◐ LIKELY ACTIVE |
| HPHi-rel Products, LLC | Essex | CT | Computer and Electronic Product Manufacturing334419 | — | ◐ LIKELY ACTIVE |
| JSJks Systems LLC | Glastonbury | CT | Computer and Electronic Product Manufacturing334220 | — | ◐ LIKELY ACTIVE |
| LLabCorp | Bloomington | CT | Computer and Electronic Product Manufacturing334516 | 20-99 | ◐ LIKELY ACTIVE |
| LSLni Swissgas US LLC | Rocky Hill | CT | Computer and Electronic Product Manufacturing334516 | — | ◐ LIKELY ACTIVE |
| MMMelanin Microchips. INC. | New Haven | CT | Computer and Electronic Product Manufacturing334413 | — | ◐ LIKELY ACTIVE |
| MTMicrochip Technology Inc. Simsbury | Simsbury | CT | Computer and Electronic Product Manufacturing334413 | 20-99 | ◐ LIKELY ACTIVE |
| MAMicromod Automation & Controls LLC | Cromwell | CT | Computer and Electronic Product Manufacturing334513 | — | ◐ LIKELY ACTIVE |
| MCMicrosemi CORP. - Rf Signal Processing | Simsbury | CT | Computer and Electronic Product Manufacturing334419 | — | ◐ LIKELY ACTIVE |
| OEOmega Engineering - CT | Norwalk | CT | Computer and Electronic Product Manufacturing334513 | 20-99 | ◐ LIKELY ACTIVE |
| OEOmega Engineering, INC. | Norwalk | CT | Computer and Electronic Product Manufacturing334513 | — | ◐ LIKELY ACTIVE |
| OIOSDA Inc | Milford | CT | Computer and Electronic Product Manufacturing334418 | 20-99 | ◐ LIKELY ACTIVE |
| PMParker Medical | Danbury | CT | Computer and Electronic Product Manufacturing334517 | 20-99 | ◐ LIKELY ACTIVE |