Remote Sensing Solutions, INC. | Boston | — | ● ACTIVE |
Resonance Research INC | Billerica | — | ● ACTIVE |
| RHRevvity Health Sciences, INC. | Hopkinton | — | ● ACTIVE |
Richard H. Bird & CO. INC. | Waltham | — | ● ACTIVE |
Sage Science, INC. | Beverly | — | ● ACTIVE |
| SISai Infotek INC | Westborough | — | ● ACTIVE |
San-tron INC | Ipswich | — | ● ACTIVE |
Schneeberger, INC | Woburn | — | ● ACTIVE |
Schoeffel International CORP | Chelmsford | — | ● ACTIVE |
Scintitech INC | Shirley | — | ● ACTIVE |
Sea Machines Robotics, INC | Boston | — | ● ACTIVE |
Securecignal LLC | Quincy | — | ● ACTIVE |
| SDSecurity Detection INC | Ashland | — | ● ACTIVE |
Seica INC | Haverhill | — | ● ACTIVE |
Sensing Systems Corporation | North Dartmouth | — | ● ACTIVE |
Sentante, INC. | Boston | — | ● ACTIVE |
| SEShielding Express, INC. | Taunton | — | ● ACTIVE |
Signal Integrity, INC. | Attleboro | — | ● ACTIVE |
Signifier Medical Technologies LLC | Needham Heights | — | ● ACTIVE |
Sionyx LLC | Beverly | — | ● ACTIVE |
| SBSophion Bioscience INC | Bedford | — | ● ACTIVE |
Spectral Evolution INC | Haverhill | — | ● ACTIVE |
| SRSquare Robot, INC | Westborough | — | ● ACTIVE |
| STSteam Trap Systems LLC | Newburyport | — | ● ACTIVE |
| SPStellant Pst Corporation | Topsfield | — | ● ACTIVE |
Stephen Gould CORP | Tewksbury | — | ● ACTIVE |
Sunburst Electronic Manufacturing Solutions, INC. | West Bridgewater | — | ● ACTIVE |
Surescan Corporation | Boxborough | — | ● ACTIVE |
Swabian Instruments Usa, INC. | Boston | — | ● ACTIVE |
Swissbit Na, INC. | Westford | — | ● ACTIVE |
Symetrica INC | Westford | — | ● ACTIVE |
Symmetric Computing, INC | Dorchester | — | ● ACTIVE |
Talkingheads Wireless INC | Somerville | — | ● ACTIVE |
Techkon USA LLC | Danvers | — | ● ACTIVE |
Technical Communications CORP | Concord | — | ● ACTIVE |
Technomad Associates, LLC | South Deerfield | — | ● ACTIVE |
| TSTelesource Services INC | Bolton | — | ● ACTIVE |
Temptronic CORP | Mansfield | — | ● ACTIVE |
Tgl Logistics LLC | Tewksbury | — | ● ACTIVE |
| TEThalassa Engineering, INC. | Falmouth | — | ● ACTIVE |
| TLThalrix LLC | Worcester | — | ● ACTIVE |
That Corporation | Milford | — | ● ACTIVE |
Thermo Fisher Scientific INC. | Waltham | — | ● ACTIVE |
Tic International, INC. | Boston | — | ● ACTIVE |
Titan Advanced Energy Solutions INC. | Salem | — | ● ACTIVE |
Trivedi Advanced Technologies LLC | Northborough | — | ● ACTIVE |
Unicom Engineering, INC. | Canton | — | ● ACTIVE |
Union Biometrica INC | Holliston | — | ● ACTIVE |
Ursanav, LLC | North Billerica | — | ● ACTIVE |
| VIVaisala INC | Burlington | 100–499 | ● ACTIVE |