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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$5,000+50 - 249 employeesGaithersburg, MDRead More
DesignDATA is an IT managed services company. Established in 1979, the midsize agency is headquartered in Gaithersburg, Maryland and Washington, District of Columbia. Their services include IT managed services, IT strategy consulting, cloud consulting & SI, and Cybersecurity.
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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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331Undisclosed50 - 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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332Undisclosed2 - 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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333Undisclosed250 - 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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334Undisclosed10 - 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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335Undisclosed50 - 249 employeesBuffalo Grove, ILBig data analytics company Aeverie Inc. Was established in 2013. The company provides BI & big data consulting & SI.Read More
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336Undisclosed10 - 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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337Undisclosed10 - 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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338Undisclosed2 - 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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339Undisclosed10 - 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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340Undisclosed50 - 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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341Undisclosed50 - 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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342Undisclosed10 - 49 employeesLake Forest, ILPassage Technology is a CRM consulting and SI company. The team specializes in CRM consulting and SI and is in Lake Forest, Illinois.Read More
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343Undisclosed250 - 999 employeesChicago, ILSilvr Lining Group - A Spaulding Ridge Company, a cloud consulting & SI company, was founded in 2017. The midsize team specializes in cloud consulting & SI and CRM consulting and SI.Read More
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344Undisclosed50 - 249 employeesChicago, ILSoliant Consulting is a software development firm headquartered in Chicago, Illinois and Devon, Pennsylvania. Their services include Custom Software Development and cloud consulting & SI.Read More
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345Undisclosed2 - 9 employeesSchaumburg, ILFort Knox Data Migration Services is a CRM consulting and SI company. They offer CRM consulting and SI and are located in Schaumburg, Illinois.Read More
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346Undisclosed250 - 999 employeesSchaumburg, ILEstablished in 2004, Blue.cloud is an Application Testing company. The team focuses on Application Testing and cloud consulting & SI and is headquartered in Tampa, Florida and Schaumburg, Illinois.Read More
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347Undisclosed2 - 9 employeesMahomet, ILCybersecurity and IT managed services company Bambenek Consulting, LTD was launched in 2011. The firm provides Cybersecurity and IT managed services, and is small.Read More
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348Undisclosed10 - 49 employeesCollinsville, ILHeadquartered in Collinsville, Illinois and St. Louis, Missouri, Computerease Group, Inc is a Cybersecurity company. Their services include Cybersecurity and IT managed services.Read More
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349Undisclosed50 - 249 employeesOak Brook, ILStrategic Solutions, Inc., a midsize Cybersecurity and IT managed services company, is in Oak Brook, Illinois. Their services include Cybersecurity and IT managed services.Read More
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350Undisclosed10 - 49 employeesSouth Barrington, ILIT strategy consulting company BSSI2 LLC specializes in IT strategy consulting and cloud consulting & SI. They were launched in 2005.Read More
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351Undisclosed10 - 49 employeesChicago, ILTeamWerks is a Cybersecurity company. Launched in 1999, their team provides Cybersecurity.Read More
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352Undisclosed2 - 9 employeesChicago, ILTalkRisk, a Cybersecurity company, focuses on Cybersecurity. The company is in Chicago, Illinois.Read More
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353Undisclosed2 - 9 employeesYorkville, ILCybersecurity company CyberGhost Security, LLC is in Yorkville, Illinois. They specialize in Cybersecurity.Read More
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354Undisclosed10 - 49 employeesWheaton, ILAdvanced Intelligence Engineering, a small Cybersecurity company, is located in Wheaton, Illinois. Their services include Cybersecurity and IT managed services.Read More
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355Undisclosed2 - 9 employeesHinsdale, ILDEADCO LLC, a Cybersecurity and IT managed services company, is based in Hinsdale, Illinois. Launched in 2021, the team provides Cybersecurity and IT managed services.Read More
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356Undisclosed10 - 49 employeesElgin, ILCTI Technology is a Cybersecurity and IT managed services company. Launched in 2004, the company is located in Elgin, Illinois. Their team offers Cybersecurity and IT managed services.Read More
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357Undisclosed50 - 249 employeesChicago, ILAGB Investigative Services, a midsize Cybersecurity and IT managed services company, is in Chicago, Illinois. Their services include Cybersecurity and IT managed services.Read More
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358Undisclosed2 - 9 employeesChicago, ILSmall IT strategy consulting company Fairway IT Solutions, is in Chicago, Illinois. Their services include IT strategy consulting and cloud consulting & SI.Read More
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359Undisclosed10 - 49 employeesSt. Charles, ILFounded in 2008, RedLegg is a Cybersecurity and IT managed services company. The firm offers Cybersecurity and IT managed services, and is small.Read More
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360Undisclosed50 - 249 employeesNaperville, ILAiRo Digital Labs, a big data company, is based in Naperville, Illinois and Gurugram, India. They specialize in BI & big data consulting & SI and cloud consulting & SI and were established in 2018.Read More
Industries
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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
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