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Top 26 IT services companies in Connecticut

Tamtam tracks 26 IT services companies headquartered in Connecticut. This list ranks all of them by number of employees on LinkedIn, led by Xerox, Electronic Data Systems and DST Systems. Their median headcount is 43. Half of them were founded in 2008 or later. The most common headquarters are Stamford (7) and Norwalk (3).

馃嚭馃嚫 Connecticut26 companiesUpdated Oct 24, 2026
#CompanyIndustryHeadquarters EmployeesFounded
1
Xeroxxerox.com

It provides innovative technology solutions for the workplace, focusing on print technology, software, services, and financial solutions for clients.

Business Consulting and Services 馃嚭馃嚫 Norwalk 47,247 n/a
2
Electronic Data Systemsdxc.com

A global company founded in 1962 offering electronic data processing management personnel and computer hardware, focusing on large corporations and government contracts

IT Services and IT Consulting 馃嚭馃嚫 West Hartford 3,809 1962
3
DST Systemsssctech.com

A global fintech company offering specialized software solutions and services for insurance, asset management, and other financial industries, with a focus on operational excellence

IT Services and IT Consulting 馃嚭馃嚫 Windsor 3,116 n/a
4
Rizingrizing.com

A global SAP partner offering strategy, implementation, and support for SAP HCM, EAM, and Retail/Fashion industries, driving business transformation with industry expertise

IT Services and IT Consulting 馃嚭馃嚫 Stamford 989 2006
5
MResultmresult.com

A leading data & analytics intelligence technology solutions provider enabling companies to harness insights for competitive advantage through AI and real-time analytics

IT Services and IT Consulting 馃嚭馃嚫 Mystic 937 2004
6
COCCcocc.com

A leading technology provider for financial institutions in the Northeast, focused on creating a great employee experience and emphasizing core values

IT Services and IT Consulting 馃嚭馃嚫 Southington 837 1967
7
SDG Corporationsdgc.com

A global provider of technology and consulting services specializing in cybersecurity, identity, and risk management solutions for enterprises worldwide

IT Services and IT Consulting 馃嚭馃嚫 Norwalk 754 1993
8
VLink Incvlinkinfo.com

Global software engineering partner providing AI-powered solutions, custom product engineering, cloud modernization, and technical talent through onshore and offshore delivery models for enterprises.

Software Development 馃嚭馃嚫 South Windsor 623 2006
9
EverestDX Inceverestdx.com

A digital platform services company specializing in orchestration, intelligent operations, and AI-powered analytics for enterprise IT to enable seamless digital transformation

Software Development 馃嚭馃嚫 Stamford 280 2018
10
Offshorly | Software Teams, Websites & Prototypes, UI/UXoffshorly.com

A digital agency specializing in web, mobile apps, and software development Offers dedicated teams, project work, and transparent, cost-effective services with offshore savings

Software Development 馃嚭馃嚫 Stamford 55 2013
11
Connecticut Computer Service, Inc. - CTCompctcomp.com

IT solutions provider since 1983, specializing in tailored technology services such as cloud services, analytics, network support, security, and managed services to help businesses thrive

IT Services and IT Consulting 馃嚭馃嚫 Plantsville 49 1983
12
9to9 Software Solutions LLC9to9soft.com

Global IT Services and Product Development firm focused on delivering flexible solutions for complex business technology, driving success through IT expertise and business process improvements

IT Services and IT Consulting 馃嚭馃嚫 Rocky Hill 46 2013
13
The TNS Group, an Omega Systems companythetnsgroup.com

A provider of Managed Security, Cloud Solutions, Business Continuity, and IT Consulting that helps businesses enhance profitability and efficiency through innovative technology solutions

IT Services and IT Consulting 馃嚭馃嚫 Stamford 43 n/a
14
Sintesys North America - ServiceNow and NearShore Specialistssintesys.com

A North American company specializing in IT digital acceleration, offering IT staffing, business process optimization, and technology talent placement for enhanced end-user experience

IT Services and IT Consulting 馃嚭馃嚫 Milford 31 2012
15
Beacon Data, Inc.beacondata.com

Expert data services company specializing in digital transformation, modern data warehouse architecture, dynamic reporting, BI dashboards, clean data, and advanced analytics for private equity portfolio companies

IT Services and IT Consulting 馃嚭馃嚫 Darien 27 n/a
16
Apple Consulting Group Incappleconsultinggroup.com

Innovative consulting firm specializing in new technology, cloud solutions, digital transformation, and business systems improvement across various sectors

IT Services and IT Consulting 馃嚭馃嚫 Trumbull 22 2010
17
Keyseries, LLCkeyseries.us

An IT solution and digital technology provider focused on building innovative software and delivering cost-effective technology solutions quickly and flexibly

Software Development 馃嚭馃嚫 North Haven 21 2009
18
U.S. Computer Connectionuscomputer.com

A leading provider of Managed IT Services since 1987, specializing in cyber security, disaster recovery, data backup, hardware support, and vendor management

IT Services and IT Consulting 馃嚭馃嚫 Stamford 13 1987
19
Canaan Technologycanaantechnology.com

Provider of installation, repair, and service for various technology systems to small businesses and residential clients with a focus on quality and customer satisfaction

IT Services and IT Consulting 馃嚭馃嚫 Norwalk 11 2001
20
Global Finesseglobalfinesse.com

Specialist consultancy providing investment and risk management systems for global banks, insurance companies, and asset management firms in the financial services industry

Financial Services 馃嚭馃嚫 Hartford 9 2004
21
Aabasoft USAaabasoftusa.com

IT services and consulting firm offering solutions in ML/AI, RPA, Web/Mobile apps, Big Data, Cloud Computing, Digital Marketing, Enterprise Automation, and IT staffing support

IT Services and IT Consulting 馃嚭馃嚫 Suffield 6 n/a
22
Dauntless Solutionsdauntless.solutions

A technology consultancy specializing in developing custom online software for entrepreneurs to work smarter and create unique platforms for end-users

IT Services and IT Consulting 馃嚭馃嚫 Norwich 4 2014
23
Alius Groupalius-group.com

Global financial services provider offering management, technology, and implementation services to solve complex challenges with innovative technology and regulatory expertise

IT Services and IT Consulting 馃嚭馃嚫 Greenwich 3 2010
24
DevCo "Coding the Future"

A leading technology firm dedicated to innovation, creating robust software solutions, implementing AI, and fostering a collaborative culture for groundbreaking projects

IT Services and IT Consulting 馃嚭馃嚫 Manchester 2 2023
25
Sprise App

This company specializes in digital business transformation services, including strategy consultation, digital operations, customer experience enhancement, and data analytics and insights

IT Services and IT Consulting 馃嚭馃嚫 Stamford 2 2015
26
McMed CPRmcmedcpr.com

Provider of managed services, cloud solutions, virtual CTO services, and digital transformation Specializing in white label backup, security camera systems, and project management

IT Services and IT Consulting 馃嚭馃嚫 Stamford 2 2008

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How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Oct 24, 2026.

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