Top 50 Application Modernization Companies in Chicago
The Best of December 2025Looking for a top legacy modernization service in Chicago?
Application modernization companies can help create new business value from existing applications. Finding the right company to partner with, however, can be an overwhelming process.
To assist you in your search for a partner, we’ve compiled this list of the top application modernization services in Chicago. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
List of the Best Chicago Enterprise Application Modernization Services
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31$1,000+2 - 9 employeesChicago, ILAdminix is a software development firm headquartered in Chicago, Illinois and Vyshhorod, Ukraine. Founded in 2022, the team offers Custom Software Development and API Development.Read More
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32$25,000+10 - 49 employeesRiverwoods, ILRead More
Insyte Consultancy Services is a software company of around 10 employees. Established in 2011, their headquarters is in Oak Park, Ill. They offer services in mobile app development, wearable app development, custom software development, and enterprise app modernization.
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33Undisclosed2 - 9 employeesChicago, ILEstablished in 2024, UXpressed is a Product Design company. The small team provides Product Design and Business Consulting.Read More
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34$5,000+50 - 249 employeesItasca, ILIntegrative Systems is a midsize IT managed services company headquartered in Itasca, Illinois and Pune, India. Their services include IT managed services and IT staff augmentation.Read More
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FollettIndustries
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35$25,000+50 - 249 employeesSchaumburg, ILPSC Group, a custom software development company, provide Custom Software Development and Enterprise App Modernization. They were launched in 1990.Read More
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36$100,000+50 - 249 employeesNaperville, ILEgen is an IT strategy consulting company. They were established in 2002 and offer IT strategy consulting and cloud consulting & SI.Read More
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37$1,000+10 - 49 employeesDeerfield, ILGiant Star AI is an UX agency located in Deerfield, Illinois. They specialize in UX/UI Design and Custom Software Development.Read More
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38$5,000+10 - 49 employeesSchaumburg, ILCloudcafe Technologies is an e-commerce development company located in Schaumburg, Illinois. Founded in 1998, the team focuses on E-Commerce Development and Web Development.Read More
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39$100,000+10 - 49 employeesNaperville, ILFounded in 2018, Flexday Solutions LLC is a small Naperville, Illinois-based IT strategy consulting company. Their services include IT strategy consulting and cloud consulting & SI.Read More
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40$10,000+10 - 49 employeesBartlett, ILPi9 is an Enterprise App Modernization company located in Ruislip, England and Bartlett, Illinois. They provide Enterprise App Modernization and BI & big data consulting & SI and were founded in 2013.Read More
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41$5,000+50 - 249 employeesLibertyville, ILBitovi, an Enterprise App Modernization company, is based in Libertyville, Illinois. They specialize in Enterprise App Modernization and Custom Software Development and were launched in 2007.Read More
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42Undisclosed10 - 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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43$5,000+2 - 9 employeesLincolnshire, ILReplient is a small custom software development firm. They focus on Custom Software Development and Enterprise App Modernization and were established in 2019.Read More
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44$10,000+10 - 49 employeesSouth Barrington, ILAptlyLabs Inc is a small software development company. They offer Custom Software Development and Web Development and were launched in 2018.Read More
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45$25,000+2 - 9 employeesNaperville, ILDeepfai Inc. Is an e-commerce development firm. Established in 2021, the team focuses on E-Commerce Development and Artificial Intelligence. The company is headquartered in Naperville, Illinois.Read More
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46Undisclosed50 - 249 employeesNaperville, ILBased in Naperville, Illinois and Bengaluru, India, SOAIS is an Application Testing company. They offer Application Testing and IT staff augmentation and were established in 2006.Read More
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47$5,000+10 - 49 employeesLibertyville, ILThinkNChange, a Back Office Outsourcing company, is in Libertyville, Illinois and Kingston, Jamaica. They focus on Back Office Outsourcing and Cybersecurity.Read More
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48$5,000+1,000 - 9,999 employeesOak Brook, ILCIeNET Technologies, a large custom software development company, is in Beijing, China and Oak Brook, Illinois. Their services include Custom Software Development and Enterprise App Modernization.Read More
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49$25,000+Freelancer employeesChicago, ILFounded in 2011, Automly App Development Company is a web development firm. The firm specializes in Web Development and Custom Software Development.Read More
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