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Top 100 Software Development companies in Illinois

Tamtam tracks 126 Software Development companies headquartered in Illinois. This list ranks the 100 largest by number of employees on LinkedIn, led by Groupon, Paylocity and Allscripts. Their median headcount is 347. Half of them were founded in 2007 or later. The most common headquarters are Chicago (70), Itasca (3) and Hoffman Estates (2).

๐Ÿ‡บ๐Ÿ‡ธ Illinois100 companiesUpdated Oct 24, 2026
#CompanyIndustryHeadquarters EmployeesFounded
1
Grouponjob-boards.eu.greenhouse.io

An experiences marketplace offering local deals, live events, and travel options, helping people discover new experiences while assisting businesses in growing

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 10,452 2008
2
Paylocitypaylocity.com

Award-winning provider of cloud-based HR and payroll software solutions, helping businesses automate processes, attract talent, and build employee connections

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Schaumburg 7,046 1997
3
Allscriptsveradigm.com

Healthcare technology company with a focus on transforming healthcare through innovative solutions Follow us at our new LinkedIn page

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 4,337 1986
4
Applied Systemswww1.appliedsystems.com

A leading provider of innovative cloud software for the insurance industry, driving transformation through digitization, automation, and new partnerships

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 2,813 1983
5
Chamberlain Groupchamberlaingroup.com

A global leader in intelligent access technology, providing seamless, secure access to homes and businesses through innovative products and software solutions

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Oak Brook 2,781 1954
6
CCC Intelligent Solutionscccis.com

Cloud platform delivering AI-driven solutions connecting insurers, repairers, automakers, and suppliers for optimized insurance and claims experiences.

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 2,417 n/a
7
Cars Commercecarscommerce.inc

Online platform connecting car buyers and sellers through innovative tools and services, supporting automotive retail and career growth nationwide.

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 2,285 1998
8
Flexeraflexera.com

Provides comprehensive visibility and actionable insights on entire IT ecosystems, enabling organizations to optimize spend, mitigate risk, and achieve positive business outcomes.

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Itasca 2,096 2008
9
Vistexvistex.com

Vistex provides solutions for managing promotions, rebates, pricing, and discounts, helping businesses optimize revenue and control incentive-related costs.

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Hoffman Estates 1,907 1999
10
Relativityrelativity.com

A software company offering RelativityOne, a SaaS product for data organization, truth discovery, and action during litigation and investigations in various sectors globally

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 1,856 n/a
11
Sprout Social, Inc.sproutsocial.com

Global leader providing social media management, publishing, engagement, customer care, advocacy, and AI-powered business intelligence software to over thirty thousand brands worldwide.

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 1,771 2010
12
Syndigosyndigo.com

Cloud-based product information management, master data management, and content distribution network serving global enterprises across grocery, healthcare, automotive, and retail sectors for commerce.

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 1,726 1973
13
RLDatixrldatix.com

Comprehensive software solutions improving patient safety, compliance, and operational efficiency for over ten thousand healthcare organizations and providers across thirty different countries globally.

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 1,571 n/a
14
Trading Technologiestradingtechnologies.com

Provider of SaaS trading platform connecting global exchanges, offering tools for execution, risk management, analytics, and post-trade services.

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 1,428 1994
15
COGNIZANT TECHNOLOGY SOLUTIONS US CORPORATIONonlinecareer360.com

Provider of technology solutions headquartered at 120 N La Salle

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 1,284 n/a
16
iManageimanage.com

The company provides an intelligent, cloud-enabled knowledge work platform using AI to uncover and activate organizational content for informed decisions and collaboration

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 1,276 2015
17
RLDatix North Americarldatix.com

RLDatix helps healthcare organizations improve safety and efficiency with governance, risk, and compliance tools, reducing infections, reporting incidents, and ensuring patient safety

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 1,168 n/a
18
Origami Riskorigamirisk.com

Innovative provider of integrated risk, compliance, safety, healthcare, and P&C insurance SaaS solutions for various industries worldwide

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 1,011 2009
19
Simplify Healthcaresimplifyhealthcare.com

Enables healthcare payers to manage benefits, provider rosters, claims configuration, and member communications through a specialized AI-driven platform for administrative and operational efficiency.

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Aurora 921 2008
20
Accertify, Inc.accertify.com

A leading provider of digital identity, fraud prevention, chargeback management, and payment gateway solutions, bringing expertise, experience, and trust

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Itasca 910 2007
21
Teletrac Navmanteletracnavman.com

Global industrial technology company offering connected mobility solutions for vehicle and equipment asset management, leveraging AI for operational insights and sustainability

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Northbrook 858 1988
22
ActiveCampaignactivecampaign.com

Customer experience automation platform offering pre-built automations, CRM, email marketing, and integrations for personalized multi-channel customer engagement.

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 840 2003
23
Tecsys Inc.tecsys.com

Global provider of transformative supply chain solutions offering industry-leading services and tools to help organizations achieve operational excellence.

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 817 1983
24
project44project44.com

Transforms fragmented logistics management into unified intelligence, bringing certainty to global supply chain operations with intelligent transportation, end-to-end visibility, yard management and last mile solutions.

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 809 2014
25
Unspecifiedunspecified.io

The company specializes in building software products that connect people and offers consulting services for businesses in need of senior level development expertise

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Spring Grove 799 2016
26
Keeper Security, Inc.keepersecurity.com

Provides a unified, cloud-native cybersecurity platform protecting users, devices, and infrastructure from cyber attacks with zero-knowledge and zero-trust security.

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 772 2011
27
Strata Decision Technologystratadecision.com

Innovative software and service solutions for healthcare providers to analyze, plan, and improve care while reducing costs and supporting their community

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 728 1996
28
Copadocopado.com

This company provides a DevOps solution for Salesforce development teams, integrating CI/CD pipelines, automated testing, and AI to accelerate application delivery

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 668 2013
29
Wolframwolfram.com

A pioneering software company founded in 1987 by Stephen Wolfram, specializing in computation, web, and cloud technologies for scientific innovation

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Champaign 634 1987
30
FarEyefareye.com

A delivery management platform that simplifies last-mile logistics, increases customer satisfaction, and improves operational efficiencies for retail, e-commerce, and logistics companies worldwide

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 612 2013
31
VelocityEHSehs.com

Offers EHS and Sustainability software, leveraging human-centered AI to enhance workplace safety, manage chemicals, and address operational risks globally.

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 576 n/a
32
CADDius.caddi.com

An ordering platform for manufacturing, specializing in custom fabricated equipment, optimizing supply chains, and promoting digital transformation in the industry

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 576 2017
33
Cleocleo.com

Provides strategic visibility and integration solutions for business ecosystems, enabling agility, modernization, and new revenue through seamless B2B and data connections.

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Rockford 570 1976
34
FIT LLCfitllc.io

Specializing in IOT strategy, FIT helps companies harness business capabilities with big data analytics for measurable results delivered in a client-friendly format

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Skokie 563 n/a
35
FourKites, Inc.fourkites.com

Real-time digital twin and AI-powered tools for supply chain visibility, disruption prevention, automation, and performance optimization across global enterprises.

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 548 2014
36
Revealrevealdata.com

A cloud-based provider of eDiscovery software with processing, review, and AI capabilities, helping legal professionals worldwide solve complex discovery problems efficiently

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 491 2008
37
Snapsheet Incsnapsheetclaims.com

Pioneering virtual appraisals and setting new standards in efficiency for auto, property, and commercial lines through cutting-edge insurtech solutions.

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 488 2011
38
Experityexperityhealth.com

A leading software company for on-demand healthcare in the US urgent care market, offering integrated solutions to streamline operations and optimize revenue

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Machesney Park 474 n/a
39
Streamline Healthcare Solutionsstreamlinehealthcare.com

Streamline specializes in providing SmartCareโ„ข EHR solutions for behavioral health organizations to operate efficiently and transform the way they deliver care

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Oak Brook 460 2003
40
Strategic Systems Internationalssidecisions.com

Builds data-driven applications for tech companies and enterprises leveraging advanced analytics and software engineering expertise across various sectors like FinTech, HealthTech, and IoT.

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 458 1991
41
SAI360sai360.com

Provides integrated software and learning resources for governance, risk, and compliance, helping organizations manage and mitigate risks effectively.

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 434 2003
42
Mastery Logistics Systemsmastery.net

Empowers shippers, carriers, and logistics companies with a cloud-based SaaS solution. Fuels automation, visibility, and productivity within complex supply chains. One platform.

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 399 2019
43
Rivalrival-hr.com

Leading provider of human capital management solutions focused on simplifying talent acquisition, modernizing HR workflows, and accelerating workforce productivity.

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 378 2003
44
Pricefxpricefx.com

It provides AI-driven pricing software for B2B enterprises, focusing on optimization and management to enhance profitability and efficiency.

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 377 2011
45
Affinitivaffinitiv.com

This company offers OEMs and dealerships a comprehensive platform with data analytics, marketing services, and customer lifecycle software to enhance performance and loyalty

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Buffalo Grove 376 2016
46
Quillbotquillbot.com

It develops AI tools like QuillBot, Scribbr, and LanguageTool to enhance writing skills for students and improve communication worldwide.

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 361 2017
47
Guest Posting Serviceszabgoi.com

This agency provides guest blogging services, SEO (off-page, on-page), and PPC services to help companies improve their online presence

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Bolingbrook 361 2021
48
DMC Engineeringdmcinfo.com

An established project-based engineering and software development firm offering services in manufacturing automation, test and measurement automation, application development, embedded programming, and digital workplace solutions

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 352 1996
49
Cameocameo.com

The company specializes in creating personalized fan experiences, connecting fans with celebrities from various fields, and has achieved significant growth and recognition

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 352 2017
50
Fulcrum GTfulcrumgt.com

Leader in legal management solutions, offering a comprehensive ecosystem on SAP platform with pre-configured processes, analytics, financials, and world-class support services

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 347 n/a
51
Dscoutdscout.com

This company provides a user research platform for capturing insights from participants, helping leading brands test ideas, iterate, collaborate, and build confidently

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 305 2011
52
PCMIpcmicorp.com

Specializing in software solutions for F&I products, extended warranties, and service contracts in the automotive and consumer goods sectors worldwide

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Park Ridge 301 2012
53
Cheetah Digital by Marigoldcheetahdigital.com

Tailored Relationship Marketing solutions for businesses, providing technology, expertise, and insights to grow customer relationships from acquisition to loyalty Trust Marigold for success

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 252 1998
54
NIQ for Digital Commercenielseniq.com

Provides digital measurement and activation solutions, fueling omnichannel retail strategy. Tracks online consumer behavior, optimizes search, marketing, e-retail, and digital shelf performance.

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 248 1923
55
Tactontacton.com

It is a SaaS company enhancing buyer engagement for manufacturers, helping them accelerate strategies, increase sales, and foster brand loyalty.

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 246 1998
56
LogicGatelogicgate.com

Modern risk management technology empowering businesses to proactively manage risk enterprise-wide with a collaborative GRC solution, the Risk Cloud Platformยฎ

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 243 2015
57
Fingerprintfingerprint.com

Innovative developer-focused fraud prevention solutions, with a global remote team and a strong open-source focus backed by major investors

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 243 2020
58
Ocientocient.com

Enabling rapid analysis of massive data sets with disruptive price performance and limitless scale, offering data warehouse solutions on-prem or in the cloud

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 232 2016
59
Sclerasclera.com

Sclera revolutionizes real estate operations with digital transformation and facility management, centralizing data and empowering organizations through smart building technologies

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 219 2018
60
Jellyvisionjellyvision.com

Innovative technology helps employees make informed benefit choices, leading to a more prosperous future by eliminating unused resources

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 213 n/a
61
Klikaklika.us

A technology company providing custom software solutions globally, working with startups and market leaders to bridge the gap between businesses and customers

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 207 2013
62
RLDatix Data Solutions Grouprldatix.com

Healthcare IT services provider specializing in strategy, optimization, data migration, project management, and interoperability for a variety of healthcare organizations

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 206 2005
63
DivIHN Integration Incdivihn.com

Offers technology consulting, digital transformation, enterprise systems development, cybersecurity, and workforce solutions, aiding clients in strategic alignment and successful project execution.

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Hoffman Estates 195 2002
64
Neon Oneneonone.com

Neon One provides simple, connected tools for small to midsize nonprofits to manage donors, volunteers, and communications, enabling lasting impact

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 195 2018
65
Mazik Global Inc.mazikglobal.com

Provider of IT solutions in healthcare, manufacturing, IoT, and education, specializing in customer-centered CRM and ERP solutions to improve business efficiency

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Park Ridge 177 2003
66
Fleetmaticsverizonconnect.com

Global provider of mobile workforce solutions for service-based businesses, offering software to manage fleets and improve productivity through real-time data analysis

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Rolling Meadows 177 2004
67
Qyrusqyrus.com

Accelerate software development with a codeless, AI & ML enabled test automation platform for Web, Mobile, and API applications, ensuring high-quality and efficient testing

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 177 n/a
68
Contruentcontruent.com

Premier capital project management software empowering owners and EPCs to build construction projects faster with integrated cost and scheduling solutions

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Naperville 174 1995
69
Compliance Group Inccomplianceg.com

A global quality compliance solutions provider offering FDA consortium expertise, automation-driven services, QMS setup, audit readiness, and process improvement packages

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Libertyville 172 2007
70
BigTime Software, Inc.bigtime.net

AI-powered platform for professional service firms offering time tracking, billing, resource management, reporting, and seamless integration with productivity tools.

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 169 2002
71
Revenerarevenera.com

Provides software and IoT companies with solutions for secure product delivery, IP protection, flexible monetization, and compliance risk elimination.

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Itasca 162 n/a
72
Software Solutions Integratedagvance.net

Providing integrated software solutions, business process consulting, and support services to improve efficiency and profitability in agribusiness and energy sectors.

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Shelbyville 162 1981
73
INSTEC (an Insurity company)insurity.com

A leading provider of property and casualty insurance software and data analytics, serving top insurers, brokers, and MGAs worldwide Delivering simplified insurance experiences

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Naperville 162 n/a
74
RevenueWellrevenuewell.com

Helps dental practices attract new patients, maximize performance, and simplify front office operations through digital marketing, patient engagement, and automation tools.

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 161 2010
75
nvisianvisia.com

An award-winning software development partner with experienced consultants, designers, strategists, and engineers deploying transformative digital technologies for leading companies

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 158 1991
76
Wellspring Worldwidewellspring.com

Provider of Open Innovation software used by 500+ organizations for tech scouting, licensing, and IP management across various industries and institutions

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 157 n/a
77
Smokeball - Legal Softwaresmokeball.com

Cloud-based legal practice management software automating time tracking, activity recording, billing, and document generation for small law firms to increase productivity and profitability

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 157 2011
78
Omedaomeda.com

Omeda specializes in integrated database marketing services through SaaS applications, allowing clients to create a master database for customer interactions and targeted email campaigns

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 156 1978
79
PMXpmx-inc.com

A digital health company utilizing AI and medical imaging to provide personalized physical examinations for universal care and wellness

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Palatine 156 2021
80
Microsystemslitera.com

Provider of software and services assisting document-intensive organizations Contact through info@ email or visit website for more information

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 154 1995
81
VASCO Data Securityonespan.com

Leading company in digital security solutions, formerly known as VASCO, now rebranded as OneSpan Connect with us at wwwonespancom

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 153 1991
82
DemandTecdemandtec.com

A company uses data science, AI, and machine learning to optimize retail pricing for leading retailers and CPGs, driving sustainable revenue growth

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 150 n/a
83
Constableconstableapp.com

A company specializing in analyzing and protecting IAM policies, uncovering unknown changes to enhance security measures

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 148 n/a
84
Computer Aided Technology (CATI) (Now GoEngineer)goengineer.com

CATI became part of GoEngineer, providing updates on product development and technical solutions Visit their LinkedIn page for more information

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Buffalo Grove 148 1992
85
SpotMespotme.com

Enterprise event platform enabling hybrid, virtual, and in-person events with personalized experiences, deep data insights, and CRM integration for global Fortune 500 companies

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 146 2001
86
Mediaflymediafly.com

A revenue enablement platform utilized by top B2B teams to engage buyers, prepare sellers, quantify value, and optimize sales force performance

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 138 2006
87
Levlev.com

Transforms commercial real estate financing with an all-in-one platform powered by AI, streamlining workflows, enhancing lender matching, and generating deal materials.

Software Development ๐Ÿ‡บ๐Ÿ‡ธ New York 133 2019
88
Detective.io (acquired)customerbase.ai

Provides a platform that analyzes unstructured data to identify sales triggers and intent signals for personalized outreach to prospects.

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 130 2012
89
Logiwalogiwa.com

A cloud fulfillment software specializing in empowering high-volume direct-to-consumer businesses to scale, improve delivery experiences, and efficiently manage warehouse operations

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 124 2017
90
Uptakeuptake.com

Industrial intelligence SaaS provider leveraging data science for predictive maintenance, risk mitigation, ESG initiatives, and safety optimization globally

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 119 2014
91
effie.aieffie.ai

International IT company specializing in SaaS services for efficient sales and brand management in stores, catering to CPG and pharmaceutical industries with notable clients

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 107 2017
92
Navman Wireless USAnavmanwireless.com

A global SaaS provider of GPS-based fleet and asset management technology, offering real-time insights to improve fleet operations and efficiency

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Glenview 97 1988
93
EPAY Systemsepaysystems.com

A leading SaaS provider offering human capital management solutions for medium to large businesses, from recruiting to retirement, with transparent pricing

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Rolling Meadows 85 2001
94
IBM Instanaibm.com

Automated observability platform monitoring applications, infrastructure, and dependencies in real time for actionable insights to optimize performance and mitigate risks

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 80 2015
95
XSELL Technologiesxselltechnologies.com

It partners with Fortune 50 companies, using AI technology to enhance contact center agents' performance and improve customer interactions and experiences.

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 77 2025
96
Sterling Trading Techsterlingtradingtech.com

Provider of trading platforms, OMS, risk tools, and infrastructure solutions for global equities, options, futures, and digital assets trading, with white labeling options available

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 74 2001
97
Quick Suite Trading / Computer Voice Systemsqstrp.quicksuitetrading.com

Providing robust financial trading solutions since 1989, with a focus on capital market software and services for professional traders worldwide

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 70 1989
98
Threekitthreekit.com

It provides a Visual Commerce Platform for selling complex goods online through 3D configuration, virtual photography, and augmented reality solutions.

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 68 2018
99
SITE Technologiessitetechnologies.io

Innovative asset management and data analytics company utilizing imagery for proactive, predictive, actionable data to extend property lifespan and save money

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 63 2018
100
Optimaticsoptimatics.com

Powering outcome-driven analytics strategies for public utility economics, leveraging an intelligent platform with engineering judgment for complex decision-making.

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Chicago 59 1996

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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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