Top 100 IT Services Companies in Illinois
The Best of August 2026Looking 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.
Jump to Most Reviewed Companies
List of the Best Illinois IT Companies
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331Undisclosed10 - 49 employeesChicago, ILBluefin is a Chicago, Illinois-based unified communications consulting & SI company. Their services include unified communications consulting & SI and ERP consulting and SI.Read More
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332Undisclosed50 - 249 employeesLisle, ILAdvanced Telecommunications of Illinois is a call center company based in Lisle, Illinois. The team specializes in Call Center Services and cloud consulting & SI.Read More
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333Undisclosed50 - 249 employeesElgin, ILD&S Communications is a Product Design company in Elgin, Illinois. They specialize in Product Design and cloud consulting & SI and were established in 1986.Read More
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334Undisclosed2 - 9 employeesChicago, ILFirefly Network Services is a Chicago, Illinois-based IT strategy consulting company. Established in 2008, the team specializes in IT strategy consulting.Read More
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335Undisclosed50 - 249 employeesChicago, ILThe William Everett Group is a software development company. Based in Chicago, Illinois, the team specializes in Custom Software Development and ERP consulting and SI.Read More
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336Undisclosed250 - 999 employeesArlington Heights, ILIT strategy consulting company Advan Soft International is located in Arlington Heights, Illinois. The team focuses on IT strategy consulting.Read More
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337Undisclosed50 - 249 employeesArlington Heights, ILVenstar Technology Inc is a big data company and IT strategy consulting company founded in 2007. The agency focuses on BI & big data consulting & SI and IT strategy consulting, and is midsize.Read More
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338Undisclosed10 - 49 employeesDes Plaines, ILIT strategy consulting company JensenIT was established in 1991. Headquartered in Des Plaines, Illinois, the team focuses on IT strategy consulting and Web Design.Read More
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339Undisclosed10 - 49 employeesLombard, ILIT managed services company OCIE by Donnell Systems, Inc. Provides IT managed services. They are based in Lombard, Illinois.Read More
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340Undisclosed10 - 49 employeesMount Prospect, ILBusiness Solutions Group, LLC, an IT managed services company, was founded in 2009. The small team focuses on IT managed services and cloud consulting & SI.Read More
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341Undisclosed250 - 999 employeesLisle, ILCRM consulting and SI and Customer Service Outsourcing company AST LLC was launched in 1995. The firm specializes in CRM consulting and SI and Customer Service Outsourcing, and is midsize.Read More
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342Undisclosed50 - 249 employeesWilmette, ILIT strategy consulting company Precise Solutions is in Wilmette, Illinois. They specialize in IT strategy consulting and Staffing.Read More
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343Undisclosed50 - 249 employeesHoffman Estates, ILLocated in Hoffman Estates, Illinois, COMNET GROUP INC. Is an IT strategy consulting and IT staff augmentation company. Their services include IT strategy consulting and IT staff augmentation.Read More
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344Undisclosed10 - 49 employeesNorthbrook, ILHolleb Consulting, an IT managed services company, provide IT managed services and IT strategy consulting. They were launched in 1988.Read More
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345Undisclosed2 - 9 employeesLockport, ILFounded in 2012, Midwest Business Consulting, LLC is an IT strategy consulting company. The small team offers IT strategy consulting and IT managed services.Read More
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346Undisclosed50 - 249 employeesWestmont, ILLaunched in 1999, Axiom Technology Group is a midsize business intelligence company in Westmont, Illinois. Their team offers BI & big data consulting & SI and IT managed services.Read More
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347Undisclosed10 - 49 employeesMachesney Park, ILBased in Machesney Park, Illinois, Entre Computer Solutions is an IT managed services company. The team focuses on IT managed services.Read More
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348Undisclosed50 - 249 employeesScott Air Force Base, ILCybersecurity company UNCOMN was established in 2011. The team focuses on Cybersecurity and Custom Software Development.Read More
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349Undisclosed2 - 9 employeesChampaign, ILEQUESTRIS CYBER TACTICS LLC is an IT managed services and Cybersecurity company. Their small team is located in Champaign, Illinois. Their team focuses on IT managed services and Cybersecurity.Read More
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350Undisclosed10 - 49 employeesDeerfield, ILSCIGON is a Cybersecurity company. They provide Cybersecurity and Enterprise App Modernization and were established in 2008. The agency is based in Deerfield, Illinois.Read More
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351Undisclosed50 - 249 employeesAurora, ILBased in Aurora, Illinois, Oloop LLC is a big data company. Their services include BI & big data consulting & SI and ERP consulting and SI.Read More
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352Undisclosed2 - 9 employeesElgin, ILHLJ Companies is an IT managed services company. The agency is based in Elgin, Illinois. Their services include IT managed services and IT strategy consulting.Read More
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353Undisclosed250 - 999 employeesAurora, ILSoftware development company Q1 Technologies, Inc. Is headquartered in Aurora, Illinois. They provide Custom Software Development and IT managed services and were established in 2002.Read More
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354Undisclosed10 - 49 employeesSkokie, ILCOMPUTER DRIVE, INC., a small IT managed services and IT strategy consulting company, is based in Skokie, Illinois. Their services include IT managed services and IT strategy consulting.Read More
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355Undisclosed10 - 49 employeesSchaumburg, ILInterstate Technologies is a small Schaumburg, Illinois-based IT strategy consulting company. The team provides IT strategy consulting and IT staff augmentation.Read More
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356Undisclosed10 - 49 employeesDeerfield, ILIT strategy consulting company Liberty Technology Advisors, Inc. Is located in Deerfield, Illinois. Established in 1995, the team focuses on IT strategy consulting and BI & big data consulting & SI.Read More
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357Undisclosed2 - 9 employeesChicago, ILFounded in 2016, 9th Floor Consulting Inc is a small ERP consulting and SI company. Their services include ERP consulting and SI.Read More
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358Undisclosed10 - 49 employeesChicago, ILIT managed services company Provisio Partners specializes in IT managed services and ECM consulting and SI. They are headquartered in Chicago, Illinois.Read More
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359Undisclosed50 - 249 employeesChicago, ILMavens is a cloud consulting & SI and CRM consulting and SI company launched in 2007. In Chicago, Illinois and London, England, the team provides cloud consulting & SI and CRM consulting and SI.Read More
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360Undisclosed50 - 249 employeesChicago, ILNeocol, a cloud consulting & SI and CRM consulting and SI company, was established in 2003. The midsize team provides cloud consulting & SI and CRM consulting and SI.Read More
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Check out an IT Services Company in Illinois with the most new reviews in the past 12 months.
Most Reviewed
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