Top 100 IT Services Companies in Illinois
The Best of December 2025Looking for a top IT services company in Illinois?
For your company to grow, it is essential to choose the best technology. Hiring an innovative IT services provider is the easiest way to ensure that you are making the best use of technology, increasing sales, and staying one step ahead of the competition.
To assist you in your search for a partner, we’ve compiled this list of the top IT consultants in Illinois. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
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List of the Best Illinois IT Companies
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$10,000+50 - 249 employeesL'viv, UkraineRead More
Founded in 2019, Uinno is an artificial intelligence firm. The midsize team specializes in Artificial Intelligence, Custom Software Development, Low/No Code Development, UX/UI Design, and more. The company is based in L'viv, Ukraine; Tallinn, Estonia; Kingston upon Thames, England and Zaporizhzhia, Ukraine.
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$1,000+50 - 249 employeesNaperville, ILRead More
BetterWorld Technology is a midsize IT managed services company launched in 2003. Their services include IT managed services, Cybersecurity, IT strategy consulting, and Compliance Consulting. The company is headquartered in Naperville, Illinois; Naperville, Illinois; Winter Park, Florida and Denver, Colorado.
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361Undisclosed250 - 999 employeesDowners Grove, ILMidsize big data company and cloud consulting & SI company 3Cloud, is located in Downers Grove, Illinois. The team provides BI & big data consulting & SI and cloud consulting & SI.Read More
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362Undisclosed50 - 249 employeesDowners Grove, ILMidsize business intelligence company Allant Group, is headquartered in Downers Grove, Illinois. Their services include BI & big data consulting & SI.Read More
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363Undisclosed10 - 49 employeesChicago, ILAleysian is a small CRM consulting and SI company. Established in 2004, the team specializes in CRM consulting and SI and Custom Software Development.Read More
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364Undisclosed250 - 999 employeesOak Brook, ILCyberTech Systems and Software, Inc is a Cybersecurity company. They offer Cybersecurity and ERP consulting and SI and are located in Oak Brook, Illinois and Redlands, California.Read More
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365Undisclosed10 - 49 employeesSchaumburg, ILECM consulting and SI and unified communications consulting & SI company IncWorx Consulting focuses on ECM consulting and SI and unified communications consulting & SI. They were established in 1998.Read More
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366Undisclosed10 - 49 employeesLisle, ILLaunched in 2020, ETHOSystems is an ERP consulting and SI company. The team provides ERP consulting and SI.Read More
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367Undisclosed50 - 249 employeesChicago, ILTruQua, an IT strategy consulting company, was launched in 2010. They specializes in IT strategy consulting and cloud consulting & SI.Read More
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368Undisclosed10 - 49 employeesChicago, ILCylon Technologies is a big data company founded in 2004. The agency provides BI & big data consulting & SI and Application Testing.Read More
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369Undisclosed10 - 49 employeesChicago, ILCatena Solutions is a business intelligence company. Their small team of employees is headquartered in Chicago, Illinois. Their team offers BI & big data consulting & SI and Business Consulting.Read More
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370Undisclosed50 - 249 employeesPeoria, ILLaunched in 2016, TADA is a big data analytics company. Headquartered in Peoria, Illinois, the team provides BI & big data consulting & SI.Read More
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371Undisclosed50 - 249 employeesChicago, ILEstablished in 2017, HEXstream is a midsize data analytics company located in Toronto, Canada and Chicago, Illinois. Their team focuses on BI & big data consulting & SI and cloud consulting & SI.Read More
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372Undisclosed250 - 999 employeesGlen Ellyn, ILInnovative Systems Group is an IT strategy consulting company. Their team is located in Glen Ellyn, Illinois and focuses on IT strategy consulting.Read More
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373Undisclosed250 - 999 employeesLombard, ILMidsize IT strategy consulting company MajorKey Technologies, is based in Lombard, Illinois. The team specializes in IT strategy consulting.Read More
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374Undisclosed250 - 999 employeesLombard, ILColumn Technical Services is an IT strategy consulting company. The Lombard, Illinois-based firm specializes in IT strategy consulting.Read More
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375Undisclosed250 - 999 employeesDeerfield, ILHeadquartered in Deerfield, Illinois, Meridian Group International, Inc. Is a midsize IT strategy consulting company. The team focuses on IT strategy consulting.Read More
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376Undisclosed50 - 249 employeesSt. Charles, ILJIT is an IT strategy consulting company. Founded in 2010, the team focuses on IT strategy consulting. The agency is located in St. Charles, Illinois.Read More
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377Undisclosed50 - 249 employeesPark Ridge, ILRadian Compliance, LLC is an IT strategy consulting company. They provide IT strategy consulting and were established in 1983.Read More
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378Undisclosed50 - 249 employeesItasca, ILIn Itasca, Illinois, Andhus Technologies is a midsize mobile app development firm. Their services include Mobile App Development and Application Testing.Read More
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379Undisclosed50 - 249 employeesPark Ridge, ILAQL Technologies is a business intelligence company. Their team is in Park Ridge, Illinois and specializes in BI & big data consulting & SI.Read More
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380Undisclosed50 - 249 employeesChicago, ILMikan is a big data company and cloud consulting & SI company launched in 2008. Their team specializes in BI & big data consulting & SI and cloud consulting & SI.Read More
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381Undisclosed50 - 249 employeesHinsdale, ILLaunched in 1986, Syscon Inc. Is a midsize big data company. Their services include BI & big data consulting & SI.Read More
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382Undisclosed50 - 249 employeesHoffman Estates, ILBeacon Consulting Group, Inc is a midsize data analytics company and mobile app development firm. They specialize in BI & big data consulting & SI and Mobile App Development and were launched in 2005.Read More
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383Undisclosed50 - 249 employeesBloomington, ILBased in Bloomington, Illinois, GENINVO is a midsize cloud consulting & SI company. The team provides cloud consulting & SI and UX/UI Design.Read More
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384Undisclosed1,000 - 9,999 employeesChicago, ILSphera is a big data company based in Chicago, Illinois. Launched in 2016, the team focuses on BI & big data consulting & SI and Compliance Consulting.Read More
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385Undisclosed1,000 - 9,999 employeesDowners Grove, ILTanium is a big data company. Their team is located in Kirkland, Washington and Downers Grove, Illinois and specializes in BI & big data consulting & SI and Cybersecurity.Read More
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386Undisclosed50 - 249 employeesJerseyville, ILVerve Industrial, a data analytics company, was established in 1994. The company specializes in BI & big data consulting & SI and Cybersecurity, and is midsize.Read More
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387Undisclosed50 - 249 employeesChicago, ILCyberMaxx is a big data company. Located in Chicago, Illinois, their team offers BI & big data consulting & SI and Cybersecurity.Read More
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388Undisclosed10 - 49 employeesChicago, ILUncommonX is a Chicago, Illinois-based Cybersecurity company. Their services include Cybersecurity and IT managed services.Read More
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389Undisclosed10 - 49 employeesChicago, ILNorthStar, a business intelligence company, was established in 2006. The team offers BI & big data consulting & SI and Cybersecurity.Read More
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390Undisclosed50 - 249 employeesChicago, ILLaunched in 1987, Primera Engineers, Ltd. Is a data analytics company. The midsize team provides BI & big data consulting & SI.Read More
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Schedule ConsultationMost Reviewed IT Services Company in Illinois
Check out an IT Services Company in Illinois with the most new reviews in the past 12 months.
Most Reviewed
IT Services Company
Illinois
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