| # | Company | Employees |
|---|---|---|
| 1 | 29,010 | |
| 2 |
TransUniontransunion.com
Global information and insights company enabling trust and confident transactions by providing actionable, data-driven pictures of individuals for businesses and consumers worldwide |
17,036 |
| 3 |
Thoughtworksthoughtworks.com
A global technology consultancy specializing in strategy, design, and engineering to drive digital innovation, fostering diverse talent and a strong cultivation culture |
12,735 |
| 4 | 4,223 | |
| 5 |
Intelliasintellias.com
Trusted technology partner accelerating sustainable digitalization for top-tier organizations, delivering mission-critical projects and measurable outcomes for clients globally |
2,955 |
| 6 |
Hugohugoinc.com
A company in Africa specializing in BPO services, digital and AI operations, omnichannel customer support, and trust and safety solutions for global tech and media companies |
2,347 |
| 7 |
Quinnoxquinnox.com
A platform and solutions company utilizing human and applied intelligence to simplify business processes, improve customer experiences, and create exceptional business value |
2,023 |
| 8 |
Technology by JLLjll.com
JLL Technologies delivers innovative real estate technology solutions, expertise, and venture-backed companies to transform the way spaces are acquired and managed |
1,660 |
| 9 |
Spherasphera.com
Sphera provides ESG performance and risk management software, data, and consulting services for EHS&S, operational risk, product stewardship, and SCRM |
1,448 |
| 10 |
bswiftbswift.com
Cloud-based technology and services transforming employee benefit engagement worldwide through intuitive online enrollment, decision support, ACA compliance reporting, and employee engagement solutions |
1,323 |
| 11 |
K2 Servicesopensitysolutions.com
Provider of IT consulting and support services for the legal community, specializing in document management, application support, networking, security, training, and help desk support |
998 |
| 12 |
TopBloctopbloc.com
A technology consulting firm specializing in fixed-price Workday deployment and support services, using automation technology to streamline processes for clients |
797 |
| 13 |
MPImega-pools.com
Specializing in cutting-edge Service Oriented Architecture solutions for various industries, with a focus on real-time business management intelligence through innovative web-based software technology |
536 |
| 14 | 438 | |
| 15 |
TECEZEteceze.com
IT service provider offering a wide range of solutions, including IT managed services, hardware supply, AV solutions, remote working, security protection, and more |
428 |
| 16 | 425 | |
| 17 |
SDI Presencesdipresence.com
IT consultancy and managed services provider offering strategic services, IT consulting, and hybrid multicloud infrastructure solutions to optimize technology environments for various industries |
411 |
| 18 |
eVSC
A Chicago-based company specializing in guiding innovative organizations through digital transformations to enhance business value from technology solutions |
396 |
| 19 | 396 | |
| 20 |
iPhone Developeri-phonedeveloper.com
Specializing in iOS, Android, and Web app development, we offer customized services for various industries, focusing on quality, client engagement, and advanced technology |
379 |
| 21 |
Beyond Keybeyondkey.com
Dynamic collaboration team designing innovative Voice, Chatbot, IoT, AI, and BI solutions for global businesses with a focus on simplicity and client feedback |
378 |
| 22 |
Shiftgigshiftgig.com
Workforce technology company empowering individuals to find local employment opportunities fitting their lifestyles and helping businesses optimize and redeploy their workforce |
369 |
| 23 |
Nettxionettxio.com
A software and intelligent services company specializing in business process management, infrastructure planning, and technical implementation to inspire success for partners |
346 |
| 24 |
Mergemerative.com
The company provides medical imaging solutions with intelligent workflow tools to enhance patient outcomes and optimize care delivery in healthcare organizations |
346 |
| 25 |
Rightpointgenpact.com
A global experience leader providing Total Experience solutions for clients to drive growth through human-centric digital transformations |
344 |
| 26 |
RedMane Technology LLCredmane.com
Software solutions firm specializing in health and human services, offering strategy, design, implementation, and optimization services, including a revolutionary case management platform |
342 |
| 27 |
Kensiumkensium.com
A full-service ecommerce solutions provider specializing in Magento and BigCommerce websites, Acumatica integration, technical SEO, PPC campaigns, and ongoing support services |
336 |
| 28 |
AVANT Communicationsgoavant.net
An industry-leading distributor specializing in cloud, collocation, and telecom services, offering consulting, solution selection, and implementation to navigate the global technology marketplace |
319 |
| 29 |
Cervellomycervello.com
This company specializes in harnessing the power of connected data, leveraging technology and cloud computing to turn messy data into actionable insights for faster decision-making |
319 |
| 30 | 316 | |
| 31 |
Nitelmyportal.business.comcast.com
A leading provider of next-generation technology services, offering seamless and integrated managed network solutions to simplify enterprise organizations' IT challenges |
316 |
| 32 |
Ascend Technologiesteamascend.com
An award-winning MSP in Chicago offering cybersecurity, infrastructure, and Salesforce solutions, with a focus on innovation, expertise, and exceptional service Join #TeamAscend! |
311 |
| 33 |
Airolabs.aiairolabs.ai
A global tech enabler applying AI at scale, partnering with F-2000 clients for business transformation through AI and Digital-led Innovation |
306 |
| 34 |
Crystal Equation Corporationcrystalequation.com
Specializing in IT/Technical staffing, we connect talented engineers with companies to drive innovation through contract staffing, direct hiring, and managed services worldwide |
297 |
| 35 |
Ashlingashling.ai
Professional services & technology firm specializing in Robotic Process Automation (RPA) and Artificial Intelligence (AI) to drive efficiency and process improvement for clients |
274 |
| 36 |
1WorldSync, by Syndigo1worldsync.com
It simplifies creation and distribution of product content, serving major brands and retailers with accurate information to enhance commerce efficiency. |
268 |
| 37 |
Maven Wave, an Eviden Companyatos.net
Leading next-generation technology company specializing in data-driven, trusted, and sustainable digital transformation with expertise in AI, cloud, security, and advanced computing. |
241 |
| 38 | 220 | |
| 39 |
LiveAdmins LLCliveadmins.com
LiveAdmins provides innovative live chat solutions for online customer support and sales, enhancing website visitor experience and boosting customer satisfaction and retention |
220 |
| 40 |
Analytics8analytics8.com
A data and analytics consultancy helping companies make sense of their data to drive business success with vendor-agnostic solutions and 20+ years of experience |
201 |
| 41 |
Barcodes, Inc.barcodesinc.com
A leading provider of barcode scanning, printing, ID card printing, mobile computing, robotics, point-of-sale, and RFID products and solutions since 1994 |
188 |
| 42 |
Medix Technologymedixteam.com
A talent solutions provider and strategic tech consulting firm specializing in digital transformation, offering HIT services, Epic EHR lifecycle services, and expert recruitment solutions |
183 |
| 43 | 168 | |
| 44 |
OneSixonesixsolutions.com
OneSix, founded in 2013, offers modern data solutions to improve business results through advanced technologies, tailored services, and competitive advantages in the market |
167 |
| 45 | 161 | |
| 46 |
NAVTEQnavteq.com
Provider of geographic data based in the US, offering navigation solutions and mapping services to businesses and consumers worldwide |
157 |
| 47 |
Marsh ClearSightmarshclearsight.com
A global integrated risk management software provider empowering organizations to anticipate, manage, and respond to strategic and operational risks in real-time |
157 |
| 48 |
Translate.comtranslate.com
Translationcom offers high-quality translation services using professional linguists and AI technologies to help companies expand globally with personalized customer experiences |
145 |
| 49 |
Hinda Incentiveshinda.com
It manages reward and recognition programs, offering sales incentives, employee engagement initiatives, and customer loyalty programs tailored to clients' needs. |
104 |
| 50 |
1WorldSync Content Solutions, by Syndigo1worldsync.com
A leading provider of product content solutions, enabling global companies to share trusted information, empowering intelligent purchase decisions through a technology platform |
103 |
| 51 |
Productive Edgeproductiveedge.com
Digital business consulting and technology solutions company specializing in guiding organizations through digital transformation, customer experience enhancement, and employee engagement |
102 |
| 52 |
F3 Technologies Inc.f3tech.com
Delivering high-quality IT management, services, and infrastructure to make IT services and deployment straightforward, affordable, and transparent |
86 |
| 53 |
Lyra Technology Grouplyratechgroup.com
Leading IT services provider for small and medium-sized organizations, serving over 10,000 clients globally with a focus on retaining original culture and brand |
83 |
| 54 |
seoClarityseoclarity.net
A natural search insights and content optimization platform using proprietary technology to drive SEO strategy, performance, and ROI for brands |
71 |
| 55 |
NPO USA Incnpousa.com
A leading IT service provider specializing in digital transformation, cloud solutions, DevOps, cybersecurity, compliance, and IT management as part of the Ricoh Group |
38 |
| 56 |
Framework ITframeworkit.com
Managed IT services provider specializing in support, strategy, and security to create agile IT environments, empower growth, and lead businesses in technology |
35 |
| 57 |
MXOtech, IncMXOtech.com
A company providing innovative technology solutions, custom web and mobile applications, and top-notch customer service for small to mid-sized businesses |
34 |
| 58 |
Cylon Technologiescylontechnology.com
Global IT Services and Consulting firm with offices in multiple locations, employing over 800 team members worldwide Specializing in innovation and client satisfaction |
33 |
| 59 |
SMaRT Technology Services, Inc.smartts.com
This company provides full-service technology solutions to businesses, schools, and governmental agencies, allowing employees to focus on business growth |
31 |
| 60 |
Pretransition Technology Grouppretransition.com
A global IT consulting and outsourcing company, specializing in software engineering, development, testing, maintenance, and support for mission critical applications |
30 |
| 61 |
Synchronous Solutions, Inc.synch-solutions.com
A Chicago-based management consulting and technology firm specializing in delivering business transformation solutions to enhance organizational value for its community |
28 |
| 62 |
UCXucxtech.com
It provides a unified platform for brands, affiliates, and influencers to enhance their eCommerce reach and manage channels effectively. |
27 |
| 63 |
SetuServsetuserv.com
A team specializing in machine learning, combining human and artificial intelligence to create industry-specific products and custom solutions for clients |
25 |
| 64 |
AmorServamorserv.com
Global provider of onsite IT support, project management, staffing, and deployment services in over 150 countries, ensuring technology availability and client satisfaction |
19 |
| 65 |
CITYTECH, Inc. (Now part of ICF Olson)icfolson.com
A global technology and marketing enablement company specializing in digital strategy, enterprise app development, web management, mobile solutions, and cloud services for business success |
18 |
| 66 |
ZYZYGY INCzyzygy.co
The company focuses on providing innovative technology solutions to various markets, with a strong emphasis on social and environmental impact |
17 |
| 67 | 17 | |
| 68 |
aboutxtreme!aboutxtreme.com
A technology consulting company focused on simplifying digital solutions, driving impact through hard work, creating lasting relationships, and mentoring youth in technology |
15 |
| 69 |
GeeksLogicity Solutionsgeekslogicity.com
A global IT company offering web services, digital marketing, graphic design, mobile app development, and SEO services with a team of expert professionals |
14 |
| 70 |
DGSTEK Innovative Solutionsdgstek.com
A premier technology solutions company in USA, focused on digital transformation through software development, website development, and customized technology solutions for businesses worldwide |
14 |
| 71 |
Market Track E-Commercemarkettrack.com
Market Track E-Commerce provides channel insights through PriceVision, tracking product data on over 400 million products worldwide for real-time monitoring and analysis |
13 |
| 72 |
Finland Technology Solutionsfinlandtech.com
Providing tailored IT solutions and expert technology support for businesses in Chicago and beyond |
11 |
| 73 |
Incubatorincubatorllc.com
It is a non-traditional incubator based in Chicago, focused on helping startups grow and fostering community relationships through innovation. |
10 |
| 74 |
Aspire Digital Integrationaspiresys.com
Technology solution provider specializing in integrating complex IT landscapes for Fortune 500 companies using expertise in EAI, SOA, API Management, and Auras accelerator framework |
6 |
| 75 |
Tekniligenz Inctekniligenz.com
Tekniligenz Inc provides customized IT solutions through staff augmentation, rapid application development, and IT resource management, helping clients achieve their technology goals efficiently |
6 |
| 76 |
Anpriseanprise.com
A Chicago-based IT firm offering software development, digital branding, cloud adoption, application automation, and cognitive solutions to global enterprises, driving business value through technology |
6 |
| 77 | 6 | |
| 78 |
EBTS USAebtsusa.com
Trusted IT managed services provider offering industry solutions, business process expertise, and application services to modernize and support agile, resilient businesses globally |
5 |
| 79 |
Nexus A.I.Nexusai.com
An AI-focused holding company specializing in overseeing and supporting various artificial intelligence ventures and investments across different industries |
4 |
| 80 |
Chicago Technical Groupctgtek.com
A global consulting and innovation company offering technology and consulting services with a focus on strategy, project management, workforce performance, and customer relationship |
4 |
| 81 |
TriForma Techtriforma.com
Offering a range of IT services such as server maintenance, disaster recovery, cloud solutions, cyber security, and asset management to ensure business success |
4 |
| 82 |
Datastrivedatastrive.com
Provider of comprehensive IT services including Managed IT Support, Cybersecurity, Cloud Solutions, aiming to streamline operations, enhance security, and drive growth |
3 |
| 83 |
SafeSoft Internationalsafesoftcorp.com
Global services provider offering software, services, and support to enhance clients' operational and financial performance through best-in-class talent and strategic application |
3 |
| 84 |
Trionfo Services LLCtrionfoservices.com
An IT company offering website design, development, mobile applications, UI/UX design, and digital marketing services |
3 |
| 85 |
AS Perl
A Cloud services provider and IT consulting company offering application development, business intelligence, cloud enablement, ERP, infrastructure support, and testing services globally |
2 |
| 86 |
Finnovion Technologies LLCfinnovion.com
Company specializing in Enterprise Digital Transformation solutions, helping businesses adapt to the digital age and improve their processes |
2 |
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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 9, 2026.
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The same list elsewhere in United States
- IT Services and IT Consulting companies in the United States 5,236
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- IT Services and IT Consulting companies in San Francisco 95
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