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.
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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91$1,000+50 - 249 employeesDeerfield, ILKleinschmidt Inc. Is a Deerfield, Illinois-based e-commerce development company. The firm focuses on E-Commerce Development, IT managed services, API Development, and Document Digitization & Management and is midsize.The firm was established in 1986.Read More
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92$10,000+10 - 49 employeesOak Brook, ILRead More
KeyLimeTie is a full-service design, development, and digital strategy agency. Their team of 20+ is based in Chicago, IL. KeyLimeTie provides content management, e-commerce, and custom application solutions. They also run social media campaigns and offer reputation management. Their clients include companies of all sizes in the information technology and advertising industries.
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AAA – Auto Club GroupIndustries
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93$1,000+2 - 9 employeesMarshall, ILRead More
Net Diatom is a web and design agency founded in 2019 with a team of fewer than 10 experts. Based in Marshall, Ill., they specialize in web development, UX/UI design, and logo services for clients.
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ShrinersIndustries
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94Undisclosed50 - 249 employeesChicago, ILOLSYS is a software development firm. Launched in 2007, the team specializes in Custom Software Development and BI & big data consulting & SI. The agency is headquartered in Chicago, Illinois.Read More
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Bank of Montreal Royal Bank of Scotland Rough Country VIPAR Heavy Duty Inc.Industries
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95$25,000+50 - 249 employeesNorthbrook, ILMidsize Blockchain company Consider It Done Technologies, is headquartered in Northbrook, Illinois. They specialize in Blockchain, Mobile App Development, Web Development, IT strategy consulting, and more and were established in 2016.Read More
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96$5,000+10 - 49 employeesSchaumburg, ILHalock Security Labs is a Cybersecurity company. They were launched in 1996 and specialize in Cybersecurity and IT strategy consulting.Read More
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97Undisclosed2 - 9 employeesSchaumburg, ILRead More
DL & Associates, LLC is a business system and IT consulting company based in Schaumburg, Ill. with no more than employees. Since their founding in 2007, they have offered IT managed services and other IT consulting solutions to various clients.
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Haco Atlantic Inc. -
98$10,000+2 - 9 employeesSchaumburg, ILRead More
Velan Solutions, LLC is a 4-person software development company founded in 2017. They are headquartered in Schaumburg, Ill. They offer numerous services, including mobile app development, IT strategy consulting, and custom software development. They primarily serve small businesses in various industries: IT, government, retail, education, and consumer services.
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Marmon REPIndustries
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99$5,000+2 - 9 employeesChicago, ILFinland Tech Solutions is an IT managed services company. They were launched in 2001 and specialize in IT managed services and cloud consulting & SI.Read More
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100$1,000+50 - 249 employeesDowners Grove, ILCoeo Solutions, LLC, an unified communications consulting & SI and IT managed services company, was launched in 2014. The firm provides unified communications consulting & SI and IT managed services.Read More
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101$10,000+10 - 49 employeesChicago, ILLocated in Chicago, Illinois, West Loop Strategy is a data analytics company. Established in 2019, the small team focuses on BI & big data consulting & SI, cloud consulting & SI, custom software development, IT strategy consulting, and more.Read More
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102$10,000+2 - 9 employeesElk Grove Village, ILRead More
Founded in 2018, Surya Tech is located in Chicago. Their three employees provide cloud consulting and SI, artificial intelligence, and web development services for enterprise, midmarket, and small businesses.
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103$1,000+10 - 49 employeesLake Barrington, ILExcalTech is an IT managed services company founded in 1994. Their services include IT managed services and Web Design.Read More
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NSA MediaIndustries
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104Undisclosed50 - 249 employeesChicago, ILDexpro Dynamics LLC is a data analytics company. The midsize team is headquartered in Chicago, Illinois. Their services include BI & big data consulting & SI.Read More
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105$1,000+2 - 9 employeesInverness, ILBusiness CyberSecurity Solutions is a Cybersecurity company. Launched in 2016, the team focuses on Cybersecurity. The company is based in Inverness, Illinois.Read More
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106Undisclosed10 - 49 employeesChicago, ILFounded in 2018, Fission Consulting is a data analytics company and IT managed services company. The team offers BI & big data consulting & SI and IT managed services.Read More
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107Undisclosed10 - 49 employeesChicago, ILRead More
Solve100 is a BI consulting firm based in Chicago. They have around 20 employees and were founded in 2013. Their services include BI & big data consulting & SI and custom software development.
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108$10,000+1,000 - 9,999 employeesChicago, ILQUINNOX is an Application Testing company. The large Chicago, Illinois-based team offers Application Testing and cloud consulting & SI. The agency was launched in 2002.Read More
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109Undisclosed10 - 49 employeesCollinsville, ILComputerease is a small IT strategy consulting company established in 1984. Their services include IT strategy consulting and Cybersecurity.Read More
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110$5,000+10 - 49 employeesChicago, ILRead More
SmarkLabs is a marketing and consulting agency located in Chicago. Since 2014, their team of 9 employees has specialized in content marketing, marketing strategy, video production, web design, and more, for primarily small businesses.
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111$5,000+10 - 49 employeesBolingbrook, ILISmile Technologies is an IT managed services company headquartered in Bolingbrook, Illinois. They specialize in IT managed services and IT strategy consulting.Read More
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112$10,000+50 - 249 employeesCarbondale, ILOptimusFox is a midsize blockchain company in Carbondale, Illinois. Established in 2018, the team offers blockchain, IT managed services, web development, mobile app development, and more.Read More
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113$50,000+1,000 - 9,999 employeesChicago, ILWest Monroe is a cloud consulting & SI company. They offer cloud consulting & SI and CRM consulting and SI and were established in 2002.Read More
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114$5,000+10 - 49 employeesBurr Ridge, ILThe Isidore Group, an IT managed services company, is located in Burr Ridge, Illinois and Chicago, Illinois. They provide IT managed services and Cybersecurity and were launched in 2014.Read More
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115Undisclosed10,000+ employeesChicago, ILBDO is a large ERP consulting and SI company established in 1963. Their team offers ERP consulting and SI and Cybersecurity.Read More
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116Undisclosed10,000+ employeesChicago, ILFounded in 1993, Thoughtworks Software Technologies Ltd is a large Chicago, Illinois-based AI company. Their team offers Artificial Intelligence and IT managed services.Read More
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117$1,000+10 - 49 employeesNaperville, ILIT Support Naperville, a Marketing Strategy company, was founded in 2000. The team offers Marketing Strategy and Digital Strategy.Read More
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118$1,000+10,000+ employeesAurora, ILHeadquartered in Aurora, Illinois, Terra Information Group is a cloud consulting & SI company. Launched in 1997, the team provides cloud consulting & SI and IT strategy consulting.Read More
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119$1,000+10 - 49 employeesNaperville, IL101 Digital is a Naperville, Illinois-based IT managed services company. Their services include IT managed services and Cybersecurity.Read More
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120$10,000+2 - 9 employeesDowners Grove, ILMacon Raine, a Content Marketing company, was launched in 2010. They are headquartered in Downers Grove, Illinois and have a small team. Their services include Content Marketing, Marketing Strategy, Digital Strategy, Email Marketing, and more.Read More
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Schedule ConsultationMost Reviewed IT Services Company in Illinois
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