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66 HARTFORDBUSINESS.COM | 2026 BOOK OF LISTS P R O F E S S I O N A L S E R V I C E S LARGEST IT AND TELEPHONY SERVICE PROVIDERS IN GREATER HARTFORD Ranked by number of statewide employees Largest IT and telephony service providers in Greater Hartford Ranked by number of statewide employees Rank Provider Conn. staff IT services/ other ser other ser vices vices Head of company/ year founded 1 Charles IT 150 William St., Middletown 06457 860-344-9628 • charlesit.com 150 Backup & disaster recovery, cloud services, compliance assessments, help desk, IT training, managed services, procurement, professional services, remote support, security, virtual CIO, voice-over-IP Encr yption, SIEM, vulnerability assessments, MF A, dark web monitoring, MDR Foster Charles Owner & CEO 2006 2 Total Communications 333 Burnham St., East Hartford 06108 860-282-9999 • totalcomm.com 63 Backup & disaster recovery, cloud services, compliance assessments, IT consulting, managed services, networking, professional services, remote support, security, storage, testing, voice-over- IP Digital transfor mation & workplace moder nization, infrastructur e, collaboration, structur ed cabling, data center , MDR/EDR and XDR Scott Lennon President & CEO 1980 3 Systems Integration Inc. 10 Research Parkway, Suite 300, Wallingford 06492 860-513-0100 • sys-int.com 55 Backup & disaster recovery, cloud services, compliance assessments, help desk, hosting, IT consulting, IT training, managed services, networking, procurement, professional services, remote support, security, storage, testing, virtual CIO, virtualization, voice-over-IP Ed Rodham President 1992 4 TAB Computer Systems Inc. (1) 29-31 Bissell St., East Hartford 06108 860-289-8850 • tabinc.com 50 Backup & disaster recovery, cloud services, compliance assessments, help desk, IT consulting, managed services, remote support, security, virtualization, voice-over-IP Anthony Arsenault President 1983 4 Visual Technologies Inc. 50 Columbus Blvd., Hartford 06106 860-251-8003 • vistech.com 50 IT consulting, managed services Custom softwar e, price & quote solutions Richard L. Huebner President & CEO 1995 6 CompassMSP 67 Prospect Ave., West Hartford 06106 833-444-2677 • compassmsp.com 48 Backup & disaster recovery, cloud services, help desk, IT consulting, managed services, networking, remote support, security, virtual CIO Michael Rapp CEO 2016 6 Vancord (2) 180 Glastonbury Blvd., Suite 107, Glastonbury 06033 855-512-4817 • vancord.com 48 Backup & disaster recovery, cloud services, compliance assessments, help desk, IT consulting, IT training, managed services, professional services, security, testing, virtual CIO Security Operations Center (SOC), Managed Detection & Response (MDR), V irtual Infor mation Michael Grande President 2005 8 Adv 211 Shunpike Road, Cromwell 06416 860-635-7100 • aosinc.com 44 IT consulting, managed services, networking, professional services Computer sales, ser vice and networking Dave M. Wrenn Director 1977 9 Coopsys (3) 995 Day Hill Road, Windsor 06095 860-523-1000 • coopsys.com 43 Backup & disaster recovery, cloud services, compliance assessments, IT consulting, IT staff augmentation, IT training, managed services, remote support, security, virtual CIO, voice-over-IP AI solutions, IT roadmapping Scott Spatz President Bob DeLisa Founder & CEO Steve Martocchio COO & Partner 1993 10 ADNET Technologies LLC 400 Capital Blvd., Suite 101, Rocky Hill 06067 860-409-1700 • thinkadnet.com 40 Backup & disaster recovery, cloud services, help desk, hosting, IT consulting, IT governance, IT staff augmentation, IT training, managed services, networking, professional services, remote support, security, virtual CIO, virtualization, voice-over-IP Custom application development, video sur veillance Lynette Maffei President 1991 11 Realized Solutions Inc. 1115 West St., Suite 5, Southington 06489 860-410-0670 • myrsi.com 39 Backup & disaster recovery, cloud services, customized software, help desk, IT consulting, managed services, networking, virtual CIO John W. Beyer CEO 2003 12 Kelser Corp. 43 Western Blvd., Glastonbury 06033 860-610-2200 • kelsercorp.com 38 Backup & disaster recovery, cloud services, compliance assessments, help desk, IT consulting, managed services, security NIST & CMMC compliance, lifecycle management Barry Kelly CEO 1981 13 The Computer Co. Inc. (4) 15 Commerce Drive, Cromwell 06416 860-635-0500 • computercompany.net 35 Backup & disaster recovery, cloud services, compliance assessments, customized software, help desk, hosting, IT consulting, IT governance, managed services, networking, procurement, remote support, security, storage, virtual CIO, virtualization, voice-over-IP Web design, co-location Kevin Barros President 1996 14 Nutmeg Technologies 270 George Washington Road, 06082 860-899-2222 • nutmegtech.com 30 Backup & disaster recovery, hosting, managed services, networking, remote support, security Phone systems Lisa Smith President 2008 15 Connecticut Communications 48 Ozick Drive, Durham 06422 203-985-1000 • ctcom.com 27 Backup & disaster recovery, cloud services, networking, voice-over-IP veillance, network carrier ser vices Scott Marks President 1974 16 CMIT Solutions 45 South Main St., Hartford 06107 860-325-2648 • cmitsolutions.com 24 (5) Backup & disaster recovery, help desk, IT consulting, managed services, security Roger Lewis CEO 1996 17 iTech Solutions Inc. 20 Stanford Drive, Farmington 06032 860-674-1636 • itechsolutions.com 20 (5) IT consulting Infor ecruiting ser vices Ann Ramakumaran CEO 1995 18 Link Solutions 12 Capital Drive, Wallingford 06492 203-284-9488 • connectedlink.net 15 Cloud services, remote support, security, voice-over-IP Security cameras, cellular boosters, SIP trunks, hosted PBX for Mitel and Polycom, Panasonic hybrid IP systems, cordless phones, WiFi, paging, masking and sound Dan A. Link President 1998 19 Managed by CST 65 North Plains Industrial Road, Wallingford 06492 203-949-9900 • managedbycst.com 12 Backup & disaster recovery, cloud services, compliance assessments, help desk, IT consulting, IT training, managed services, networking, remote support, security Basil G Minickene John T Minickene Partners 1989 20 Universal Connectivity 8 North Main St., West Hartford 06107 860-808-1412 • universalconnectivity.com 10 Backup & disaster recovery, cloud services, IT consulting, managed services, networking, security, voice-over-IP Collaboration, contact center solutions James Smith President & chief connector 1995 21 Pilothouse Communications LLC 36 Main St., Suite 741, Old Saybrook 06475 203-649-6405 • pilothousecomm.com 8 Cloud services, security, voice-over-IP Data ser vices, low-voltage wiring, video sur veillance systems, carrier ser vices Jessica Lyne Riley Owner & CEO 2004 22 Uvoice USA LLC 504 Main St., Farmington 06032 860-656-1000 • uvoice.com 6 Hosting, voice-over-IP MS T eams integration, SMS, softphones, call center applications, call r ecording, ACD, work from anywher e Dwayne M. Connelly Partner 1990 Source: Each provider via survey as of Q3 2025, corporate websites and press releases. N/A = Not available. ACD = automatic call distribution, CCTV = closed circuit television, CIO = chief information of , HIPAA = Health Insurance Portability and Accountability Act, IP = internet protocol, IT = information technology, MDR = managed detection & response, MFA = multi-factor authentication, SIEM = security information & event management, SIP = session initiation protocol, SMS = short message service, vCISO = virtual chief information security of ess time for Manchester's Abele Technologies and Rocky Hill's Alarm New England. (1) 100% employee owned. (2) Headquarters in Milford. (3) Formerly Cooperative Systems. (4) In August 2025, announced plans to move to 20 Western Blvd. in Glastonbury. (5) Data from HBJ's 2024 survey. -Compiled by Stephanie R. Meagher, research@nebusinessmedia.com