| # | Company | Employees |
|---|---|---|
| 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 |
10,452 |
| 2 |
Paylocitypaylocity.com
Award-winning provider of cloud-based HR and payroll software solutions, helping businesses automate processes, attract talent, and build employee connections |
7,046 |
| 3 |
Allscriptsveradigm.com
Healthcare technology company with a focus on transforming healthcare through innovative solutions Follow us at our new LinkedIn page |
4,337 |
| 4 |
Applied Systemswww1.appliedsystems.com
A leading provider of innovative cloud software for the insurance industry, driving transformation through digitization, automation, and new partnerships |
2,813 |
| 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 |
2,781 |
| 6 |
CCC Intelligent Solutionscccis.com
Cloud platform delivering AI-driven solutions connecting insurers, repairers, automakers, and suppliers for optimized insurance and claims experiences. |
2,417 |
| 7 |
Cars Commercecarscommerce.inc
Online platform connecting car buyers and sellers through innovative tools and services, supporting automotive retail and career growth nationwide. |
2,285 |
| 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. |
2,096 |
| 9 |
Vistexvistex.com
Vistex provides solutions for managing promotions, rebates, pricing, and discounts, helping businesses optimize revenue and control incentive-related costs. |
1,907 |
| 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 |
1,856 |
| 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. |
1,771 |
| 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. |
1,726 |
| 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. |
1,571 |
| 14 |
Trading Technologiestradingtechnologies.com
Provider of SaaS trading platform connecting global exchanges, offering tools for execution, risk management, analytics, and post-trade services. |
1,428 |
| 15 |
COGNIZANT TECHNOLOGY SOLUTIONS US CORPORATIONonlinecareer360.com
Provider of technology solutions headquartered at 120 N La Salle |
1,284 |
| 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 |
1,276 |
| 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 |
1,168 |
| 18 |
Origami Riskorigamirisk.com
Innovative provider of integrated risk, compliance, safety, healthcare, and P&C insurance SaaS solutions for various industries worldwide |
1,011 |
| 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. |
921 |
| 20 |
Accertify, Inc.accertify.com
A leading provider of digital identity, fraud prevention, chargeback management, and payment gateway solutions, bringing expertise, experience, and trust |
910 |
| 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 |
858 |
| 22 |
ActiveCampaignactivecampaign.com
Customer experience automation platform offering pre-built automations, CRM, email marketing, and integrations for personalized multi-channel customer engagement. |
840 |
| 23 |
Tecsys Inc.tecsys.com
Global provider of transformative supply chain solutions offering industry-leading services and tools to help organizations achieve operational excellence. |
817 |
| 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. |
809 |
| 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 |
799 |
| 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. |
772 |
| 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 |
728 |
| 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 |
668 |
| 29 |
Wolframwolfram.com
A pioneering software company founded in 1987 by Stephen Wolfram, specializing in computation, web, and cloud technologies for scientific innovation |
634 |
| 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 |
612 |
| 31 |
VelocityEHSehs.com
Offers EHS and Sustainability software, leveraging human-centered AI to enhance workplace safety, manage chemicals, and address operational risks globally. |
576 |
| 32 |
CADDius.caddi.com
An ordering platform for manufacturing, specializing in custom fabricated equipment, optimizing supply chains, and promoting digital transformation in the industry |
576 |
| 33 | 570 | |
| 34 | 563 | |
| 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. |
548 |
| 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 |
491 |
| 37 |
Snapsheet Incsnapsheetclaims.com
Pioneering virtual appraisals and setting new standards in efficiency for auto, property, and commercial lines through cutting-edge insurtech solutions. |
488 |
| 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 |
474 |
| 39 |
Streamline Healthcare Solutionsstreamlinehealthcare.com
Streamline specializes in providing SmartCareโข EHR solutions for behavioral health organizations to operate efficiently and transform the way they deliver care |
460 |
| 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. |
458 |
| 41 |
SAI360sai360.com
Provides integrated software and learning resources for governance, risk, and compliance, helping organizations manage and mitigate risks effectively. |
434 |
| 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. |
399 |
| 43 |
Rivalrival-hr.com
Leading provider of human capital management solutions focused on simplifying talent acquisition, modernizing HR workflows, and accelerating workforce productivity. |
378 |
| 44 |
Pricefxpricefx.com
It provides AI-driven pricing software for B2B enterprises, focusing on optimization and management to enhance profitability and efficiency. |
377 |
| 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 |
376 |
| 46 |
Quillbotquillbot.com
It develops AI tools like QuillBot, Scribbr, and LanguageTool to enhance writing skills for students and improve communication worldwide. |
361 |
| 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 |
361 |
| 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 |
352 |
| 49 | 352 | |
| 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 |
347 |
| 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 |
305 |
| 52 |
PCMIpcmicorp.com
Specializing in software solutions for F&I products, extended warranties, and service contracts in the automotive and consumer goods sectors worldwide |
301 |
| 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 |
252 |
| 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. |
248 |
| 55 |
Tactontacton.com
It is a SaaS company enhancing buyer engagement for manufacturers, helping them accelerate strategies, increase sales, and foster brand loyalty. |
246 |
| 56 |
LogicGatelogicgate.com
Modern risk management technology empowering businesses to proactively manage risk enterprise-wide with a collaborative GRC solution, the Risk Cloud Platformยฎ |
243 |
| 57 |
Fingerprintfingerprint.com
Innovative developer-focused fraud prevention solutions, with a global remote team and a strong open-source focus backed by major investors |
243 |
| 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 |
232 |
| 59 |
Sclerasclera.com
Sclera revolutionizes real estate operations with digital transformation and facility management, centralizing data and empowering organizations through smart building technologies |
219 |
| 60 |
Jellyvisionjellyvision.com
Innovative technology helps employees make informed benefit choices, leading to a more prosperous future by eliminating unused resources |
213 |
| 61 | 207 | |
| 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 |
206 |
| 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. |
195 |
| 64 |
Neon Oneneonone.com
Neon One provides simple, connected tools for small to midsize nonprofits to manage donors, volunteers, and communications, enabling lasting impact |
195 |
| 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 |
177 |
| 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 |
177 |
| 67 | 177 | |
| 68 |
Contruentcontruent.com
Premier capital project management software empowering owners and EPCs to build construction projects faster with integrated cost and scheduling solutions |
174 |
| 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 |
172 |
| 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. |
169 |
| 71 |
Revenerarevenera.com
Provides software and IoT companies with solutions for secure product delivery, IP protection, flexible monetization, and compliance risk elimination. |
162 |
| 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. |
162 |
| 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 |
162 |
| 74 |
RevenueWellrevenuewell.com
Helps dental practices attract new patients, maximize performance, and simplify front office operations through digital marketing, patient engagement, and automation tools. |
161 |
| 75 |
nvisianvisia.com
An award-winning software development partner with experienced consultants, designers, strategists, and engineers deploying transformative digital technologies for leading companies |
158 |
| 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 |
157 |
| 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 |
157 |
| 78 | 156 | |
| 79 |
PMXpmx-inc.com
A digital health company utilizing AI and medical imaging to provide personalized physical examinations for universal care and wellness |
156 |
| 80 |
Microsystemslitera.com
Provider of software and services assisting document-intensive organizations Contact through info@ email or visit website for more information |
154 |
| 81 |
VASCO Data Securityonespan.com
Leading company in digital security solutions, formerly known as VASCO, now rebranded as OneSpan Connect with us at wwwonespancom |
153 |
| 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 |
150 |
| 83 |
Constableconstableapp.com
A company specializing in analyzing and protecting IAM policies, uncovering unknown changes to enhance security measures |
148 |
| 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 |
148 |
| 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 |
146 |
| 86 |
Mediaflymediafly.com
A revenue enablement platform utilized by top B2B teams to engage buyers, prepare sellers, quantify value, and optimize sales force performance |
138 |
| 87 | 133 | |
| 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. |
130 |
| 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 |
124 |
| 90 |
Uptakeuptake.com
Industrial intelligence SaaS provider leveraging data science for predictive maintenance, risk mitigation, ESG initiatives, and safety optimization globally |
119 |
| 91 | 107 | |
| 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 |
97 |
| 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 |
85 |
| 94 |
IBM Instanaibm.com
Automated observability platform monitoring applications, infrastructure, and dependencies in real time for actionable insights to optimize performance and mitigate risks |
80 |
| 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. |
77 |
| 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 |
74 |
| 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 |
70 |
| 98 |
Threekitthreekit.com
It provides a Visual Commerce Platform for selling complex goods online through 3D configuration, virtual photography, and augmented reality solutions. |
68 |
| 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 |
63 |
| 100 |
Optimaticsoptimatics.com
Powering outcome-driven analytics strategies for public utility economics, leveraging an intelligent platform with engineering judgment for complex decision-making. |
59 |
Turn this list into pipeline
Tamtam finds the decision-makers at every company on a list like this one, with verified emails, phone numbers and the buying signals that tell you when to reach out.
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.
More company lists in Illinois
- The largest companies in Illinois 4,175
- Hospitals and Health Care companies in Illinois 274
- Financial services firms in Illinois 267
- Manufacturers in Illinois 254
- IT Services and IT Consulting companies in Illinois 230
- Financial Services companies in Illinois 203
- Transportation, Logistics, Supply Chain and Storage companies in Illinois 195
- Critical infrastructure operators in Illinois 178
- Education providers in Illinois 176
- Retail chains in Illinois 172
- SaaS companies in Illinois 172
- IT services companies in Illinois 166
- Healthcare providers in Illinois 140
- Higher Education companies in Illinois 139
- Logistics companies in Illinois 131
- Hardware manufacturers in Illinois 127
- Truck Transportation companies in Illinois 123
- Insurance companies in Illinois 118
- Family-owned companies in Illinois 112
- Construction companies in Illinois 107
- Non-profit Organizations companies in Illinois 106
- Venture capital and private equity firms in Illinois 103
- Consulting firms in Illinois 96
- Contract manufacturers in Illinois 95
The same list elsewhere in United States
- Software Development companies in the United States 4,505
- Software Development companies in California 1,386
- Software Development companies in New York State 595
- Software Development companies in Texas 350
- Software Development companies in Massachusetts 245
- Software Development companies in Florida 194
- Software Development companies in Georgia 128
- Software Development companies in Washington State 115
- Software Development companies in Alabama 108
- Software Development companies in Virginia 97
- Software Development companies in New Jersey 93
- Software Development companies in Colorado 92
- Software Development companies in North Carolina 90
- Software Development companies in Pennsylvania 83
- Software Development companies in Utah 77
- Software Development companies in Delaware 71
- Software Development companies in San Francisco 560
- Software Development companies in New York 532
- Software Development companies in Austin 134
- Software Development companies in Boston 131
- Software Development companies in Chicago 89
- Software Development companies in Palo Alto 81
- Software Development companies in Atlanta 77
- Software Development companies in San Jose 65