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Top 27 Software Development companies in Connecticut

Tamtam tracks 27 Software Development companies headquartered in Connecticut. This list ranks all of them by number of employees on LinkedIn, led by SS&C Technologies, Pitney Bowes and Zinnia. Their median headcount is 280. Half of them were founded in 2005 or later. The most common headquarters are Stamford (5), Windsor (4) and Greenwich (3).

馃嚭馃嚫 Connecticut27 companiesUpdated Oct 24, 2026
#CompanyIndustryHeadquarters EmployeesFounded
1
SS&C Technologiesssctech.com

Provider of cloud-based software and solutions for financial and healthcare industries, serving over 22,000 companies globally.

Software Development 馃嚭馃嚫 Windsor 27,478 1986
2
Pitney Bowespitneybowes.com

Provides digital shipping solutions, mailing innovation, and financial services to businesses and government entities worldwide, simplifying mail and parcel sending.

Software Development 馃嚭馃嚫 Shelton 12,611 1920
3
Zinniazinnia.com

The company simplifies life and annuity processes through technology, empowering clients to innovate, launch products faster, and better serve customers

Software Development 馃嚭馃嚫 Greenwich 2,494 2005
4
Insurityinsurity.com

Provider of cloud-based software for insurance industry, trusted by top carriers and MGAs in the US, offering digital platform and analytics solutions for superior customer experience

Software Development 馃嚭馃嚫 Hartford 1,233 n/a
5
SS&C Blue Prismblueprism.com

Provides agentic automation software with AI, industry expertise, and governance for high-stakes environments in banking, healthcare, insurance, and asset management.

Software Development 馃嚭馃嚫 Windsor 1,050 n/a
6
SS&C Ezeadvent.com

Global provider of investment management software solutions optimizing operational and investment processes for financial and healthcare industries worldwide

Software Development 馃嚭馃嚫 Windsor 871 n/a
7
Mastercammastercam.com

Develops and supplies advanced CAD/CAM software for diverse manufacturing processes, enabling precision, productivity, and performance for various industries globally.

Software Development 馃嚭馃嚫 Tolland 809 1983
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
DST Healthssctech.com

The company provides pharmacy, healthcare administration, and health outcomes solutions to health plans, PBMs, and providers, optimizing clinical, operational, and financial outcomes

Software Development 馃嚭馃嚫 Windsor 577 n/a
10
Triple Point Technologyiongroup.com

Revolutionizing commodities management with innovative solutions for procurement, trading, risk management, and delivery, partnering with top companies to enhance decision-making and productivity

Software Development 馃嚭馃嚫 Westport 574 n/a
11
Finalsitefinalsite.com

A company that offers a simplified solution for school communications and enhanced online visibility #BetterToolsStrongerSchools

Software Development 馃嚭馃嚫 Glastonbury 569 1998
12
Foleyfoley.io

A reliable partner in regulatory compliance and financial services, specializing in DOT regulations, FCRA hiring requirements, and overall safety and financial performance management

Software Development 馃嚭馃嚫 Hartford 349 1992
13
TicketNetworkticketnetwork.com

An online marketplace for concert, sport, and theater tickets, offering a leading software platform for real-time transactions in the secondary ticket industry

Software Development 馃嚭馃嚫 South Windsor 315 2002
14
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
15
iceDQicedq.com

Platform for ETL test automation, production data monitoring, and data migration testing ensuring data accuracy and consistency.

Software Development 馃嚭馃嚫 Stamford 202 2005
16
Therap Servicestherapservices.net

The company provides electronic record and management tools for service organizations, focusing on enhancing outcomes, efficiency, and data security

Software Development 馃嚭馃嚫 Torrington 172 2003
17
Shibumishibumi.com

The Shibumi Strategic Portfolio Management Platform streamlines strategy execution, decision-making, and alignment, freeing teams to focus on achieving measurable results efficiently

Software Development 馃嚭馃嚫 Norwalk 166 2012
18
ReFrame Solutionsreframesolutions.com

Cloud-native technology platform focused on digital transformation, customer experience, and operational efficiency for the public sector through innovative, customer-centric solutions and services

Software Development 馃嚭馃嚫 Hartford 65 2019
19
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
20
INDATAindataipm.com

Provider of software, technology, and services for buy-side firms, offering trade order management, compliance, portfolio accounting, and front-to-back office solutions for institutional investors worldwide

Software Development 馃嚭馃嚫 Greenwich 38 n/a
21
Vertraxvertrax.com

A leading provider of Supply Chain Management solutions for oil & gas bulk liquid distribution, offering optimization, visibility, analytics, and insight with Blockchain and IoT integration

Software Development 馃嚭馃嚫 New Haven 36 2002
22
Paygilantpaygilant.com

Revolutionary fraud prevention technology for fintech, protecting against various fraud types without compromising user experience and privacy

Software Development 馃嚭馃嚫 New Haven 24 2015
23
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
24
qTechnology

A tech startup that utilizes AI, machine learning, and optimization through cloud and decentralized technology to develop proprietary platforms and products

Software Development 馃嚭馃嚫 Greenwich 15 2008
25
Eximwareeximware.com

Industry leader in commodity trading software & eCommerce platforms; specializing in coffee, tea, cocoa, metals, and freight to improve trade desk profitability

Software Development 馃嚭馃嚫 Stamford 14 2000
26
VeraCore Software Solutions, Inc.advantive.com

Provider of order fulfillment and warehouse management software for fulfillment companies, e-retailers, and marketing service providers for over 30 years

Software Development 馃嚭馃嚫 Farmington 3 1981
27
RM Solutions Grouprmsolutions-group.com

A digital consulting organization providing operations solutions to SME's, government departments, divisions, and large enterprises in various industry verticals

Software Development 馃嚭馃嚫 Stamford 2 2016

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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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