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
-
121$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
Industries
-
122$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
Industries
-
123Undisclosed10,000+ 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
Industries
-
124$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
Industries
-
125$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
-
126$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
Industries
-
127$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
-
128$5,000+250 - 999 employeesChicago, ILNetrix, LLC is an IT managed services company. They offer IT managed services and Custom Software Development and were founded in 1989.Read More
Industries
-
129$1,000+10 - 49 employeesChicago, ILSmall IT managed services company Steadfast Networks, is in Chicago, Illinois. Their services include IT managed services and cloud consulting & SI.Read More
Clients
Prosite Business Solutions -
130Undisclosed50 - 249 employeesMount Prospect, ILCrestwood Associates is a CRM consulting and SI company. The Mount Prospect, Illinois-based company was founded in 1998. Their services include CRM consulting and SI and ERP consulting and SI.Read More
Industries
-
131Undisclosed50 - 249 employeesChicago, ILSonoma Partners is a midsize CRM consulting and SI company founded in 2001. Their team specializes in CRM consulting and SI and cloud consulting & SI.Read More
Industries
-
132$5,000+10 - 49 employeesO'Fallon, ILSmall Cybersecurity company Alpine Security, is in O'Fallon, Illinois. The team focuses on Cybersecurity.Read More
Industries
-
133Undisclosed250 - 999 employeesChicago, ILNetrix LLC, an IT strategy consulting company, was launched in 1989. The team provides IT strategy consulting and cloud consulting & SI and is located in Chicago, Illinois.Read More
-
134$10,000+250 - 999 employeesChicago, ILSDI Presence is an IT managed services company. Founded in 2016, the team focuses on IT managed services and IT strategy consulting.Read More
Industries
-
135Undisclosed50 - 249 employeesElk Grove Village, ILCacheFly is an other IT consulting and SI company. The Elk Grove Village, Illinois-based team focuses on other IT consulting and SI and IT strategy consulting.Read More
Industries
-
136$5,000+50 - 249 employeesLisle, ILCorterra Solutions is an ERP consulting and SI company. They are located in Lisle, Illinois, and their services include ERP consulting and SI and IT managed services.Read More
Industries
-
137Undisclosed10 - 49 employeesChicago, ILCloudbakers is a small Chicago, Illinois-based unified communications consulting & SI company. Their services include unified communications consulting & SI and cloud consulting & SI.Read More
Industries
-
138$1,000+10 - 49 employeesNorthfield, ILCIO Landing, a small IT managed services company, is headquartered in Northfield, Illinois and Chicago, Illinois. The team focuses on IT managed services and ECM consulting and SI.Read More
Industries
-
139$5,000+50 - 249 employeesChicago, ILRKON Technologies is an IT managed services company headquartered in Chicago, Illinois. The team provides IT managed services and IT strategy consulting.Read More
Industries
-
140$10,000+250 - 999 employeesChicago, ILClarity Insights, a business intelligence company, was established in 2008. The midsize team offers BI & big data consulting & SI and cloud consulting & SI.Read More
-
141$1,000+250 - 999 employeesWarrenville, ILTekLink International Inc. Is a Warrenville, Illinois-based data analytics company. Founded in 1998, the team provides BI & big data consulting & SI and IT strategy consulting.Read More
-
142$5,000+10 - 49 employeesElgin, ILCTI Technology is a Cybersecurity and IT managed services company. Established in 2004, the company is headquartered in Elgin, Illinois. Their team focuses on Cybersecurity and IT managed services.Read More
Industries
-
143Undisclosed50 - 249 employeesEast Peoria, ILHeadquartered in East Peoria, Illinois, HEART Technologies, Inc. Is a midsize IT managed services company. The team focuses on IT managed services.Read More
-
144$100,000+50 - 249 employeesChicago, ILFounded in 2000, Discover The Power of Your Data is a data analytics company and Business Consulting company. Their team offers BI & big data consulting & SI and Business Consulting.Read More
Industries
-
145Undisclosed50 - 249 employeesSchaumburg, ILAscent Innovations LLC is an ERP consulting and SI company. Founded in 2009, the company focuses on ERP consulting and SI and Cybersecurity.Read More
Industries
-
146$10,000+10 - 49 employeesDowners Grove, ILAqueity is an IT managed services company headquartered in Downers Grove, Illinois. Their services include IT managed services and Cybersecurity.Read More
Industries
-
147Undisclosed10 - 49 employeesChicago, ILBlack Diamond Solutions is an IT managed services company. Launched in 2004, the company is headquartered in Chicago, Illinois. Their team provides IT managed services and cloud consulting & SI.Read More
Industries
-
148$10,000+10 - 49 employeesChicago, ILCatalyst Consulting group, a software development firm, is in Chicago, Illinois. Founded in 1992, the team provides Custom Software Development and IT managed services.Read More
Industries
-
149Undisclosed10 - 49 employeesChicago, ILLogan Consulting is a small CRM consulting and SI company in Chicago, Illinois. Their services include CRM consulting and SI and ERP consulting and SI.Read More
-
150$1,000+10 - 49 employeesWoodstock, ILLeadingIT is a small Cybersecurity company. They offer Cybersecurity and IT strategy consulting and were launched in 2010.Read More
Industries
Featured provider
Get connected with a company for free
Tell us about your project, and we'll match you with vetted companies that meet your requirements.
Get connected with the right company for you
We'll do the work for you – finding and connecting you with service providers that meet your exact requirements.
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
- 11 5 new reviews
- 12 5 new reviews
- 13 4 new reviews
- 14 4 new reviews
- 15 3 new reviews
