Illinois is becoming a wellspring of software development companies specializing in diverse tech solutions for businesses. Constructing everything from mobile apps, web development, UX design, cloud infrastructure, to integration and API services, these companies are simplifying operations and boosting efficiency for companies globally. As the state's tech industry continues to expand, many of these firms are collaborating across sectors like healthcare, IoT, and cloud to deliver customized advancements. The future of this industry promises continual growth with increased adoption of emerging tech solutions and software-centric transformations across industries.


Top 23 software development companies in Illinois

1. Intersog

  • Website: intersog.com
  • Headquarters: Chicago, Illinois, United States
  • Founded: 2005
  • Headcount: 51-200
  • LinkedIn

Intersog is a software development company that offers integration and API services to help businesses connect multiple systems and manage their operations efficiently.


2. Spr

  • Website: spr.com
  • Headquarters: Chicago, Illinois, United States
  • Founded: 1973
  • Headcount: 201-500
  • Latest funding type: Acquired
  • LinkedIn

SPR is a technology modernization firm specializing in custom software development, mobile app development, UX design, cloud infrastructure, business data analytics, digital workplace experience, software testing, and emerging technologies. They work with strategic alliances and have expertise in industries like medical, IoT, and cloud.


3. Codiant - A YASH Technologies Company

  • Website: codiant.com
  • Headquarters: East Moline, Illinois, United States
  • Founded: 2010
  • Headcount: 201-500
  • Latest funding type: Acquired
  • LinkedIn

Codiant is a company that offers various IT solutions and services. They specialize in mobile app development, web development, and software development. With a team of experienced professionals, Codiant helps businesses transform their ideas into functional and user-friendly digital solutions.


4. ITConnectUS

ITConnectUS Inc. is a global Software Development, IT Product Design and IT Consulting Company that provides web application development, digital innovations, and IT recruitment solutions. They offer services such as AI/ML development, Python development, and Blockchain development.


5. Vaival Technologies LLC

  • Website: vaival.com
  • Headquarters: Chicago, Illinois, United States
  • Founded: 2009
  • Headcount: 51-200
  • LinkedIn

Vaival Technologies is a trusted partner for entrepreneurs, SMEs, and major corporations, providing custom software development, design innovation, and consultancy services. With a focus on excellence in customer experience, they offer revolutionary solutions to address IT challenges faced by businesses.


6. Peaksoft

  • Website: peaksoft.us
  • Headquarters: Chicago, Illinois, United States
  • Founded: 2017
  • Headcount: 51-200
  • LinkedIn

Peaksoft is a custom software development company that offers solutions to accelerate workflows and optimize operations. Their team of tech geeks and design experts amalgamate technology and user-centric designs to create useful and accessible applications. They specialize in mobile application development, ecommerce development, and enterprise-grade apps. Peaksoft also provides dedicated software development teams and API integration services. Their clients include leading companies in various industries.


7. FarShore Partners

  • Website: farshore.com
  • Headquarters: Chicago, Illinois, United States
  • Founded: 2006
  • Headcount: 51-200
  • LinkedIn

FarShore Partners is a full-service custom software development and award-winning design firm. We specialize in extending brands online with custom web and mobile applications. With a global team and 17 years of experience, we have successfully launched thousands of projects.


8. iConnect Technologies

iConnect is a full service software development company based in Chicago, Illinois. They specialize in custom applications development, staff augmentation, analytics, mobile applications development, and quality assurance. They focus on understanding their partners' business needs and determining the best technology solutions to help them reach their full potential.


9. CSE Software Inc.

CSE Software Inc. is a technology company specializing in software and training solutions for large-cap clients. They develop custom software, provide instructional design, and offer training services for industries such as agricultural, healthcare, and heavy equipment. With expertise in augmented reality, virtual reality, and cross-platform applications, they deliver innovative solutions to drive results in today's digital landscape.


10. CyberHULL

  • Website: cyberhull.com
  • Headquarters: Carol Stream, Illinois, United States
  • Founded: 2008
  • Headcount: 51-200
  • LinkedIn

Cyberhull is a technology company offering custom software development, performance & code evaluation, and QA testing services. They work with various e-commerce platforms and provide expertise in engineering to deliver results on time and within budget.


11. Utech

  • Website: utechcorp.com
  • Headquarters: Oakbrook Terrace, Illinois, United States
  • Founded: 2016
  • Headcount: 51-200
  • LinkedIn

Utech is a software and technology development company specializing in custom solutions for transportation and logistics companies. They offer software tools to manage and optimize fleet operations, including custom electronic logging devices (ELDs), cameras, GPS trackers, and more. Utech has surpassed $10 million in revenue and is dedicated to providing innovative solutions for the trucking and logistics industry.


12. Velvetech LLC

  • Website: velvetech.com
  • Headquarters: Northbrook, Illinois, United States
  • Founded: 2004
  • Headcount: 51-200
  • LinkedIn

Velvetech is a custom software development company that offers full-cycle mobile software development services. They help clients define technical requirements and publish applications on the App Store and Google Play. Velvetech has a proven expertise in network engineering, infrastructure management, data migration, system integration, cloud computing, and information security. They provide tailored technology solutions to support businesses in various industries.


13. Liventus, Inc.

  • Website: liventus.com
  • Headquarters: Northbrook, Illinois, United States
  • Founded: 2002
  • Headcount: 51-200
  • LinkedIn

Liventus is a custom software development company that offers solutions for various industries, including construction, eCommerce, and healthcare. They provide services such as integrations and implementations, CRM customization, and business intelligence. With over 20 years of experience, Liventus has grown its global team and expanded into international markets.


14. Codetru

  • Website: codetru.com
  • Headquarters: Arlington Heights, Illinois, United States
  • Founded: 2018
  • Headcount: 11-50
  • LinkedIn

CodeTru is a software development and IT services company that offers a wide range of services including Android and iOS app development, web application development, and business process automation. They focus on solving technology problems for their clients and building products based on market analysis. CodeTru also specializes in Robotic Process Automation (RPA) and provides next-gen digitized solutions and infrastructure. With expertise in healthcare and insurance industries, they help improve workflows, implement seamless solutions, and create interfaces for business growth.


15. Universal Technical Systems

  • Website: uts.com
  • Headquarters: Loves Park, Illinois, United States
  • Founded: 1984
  • Headcount: 51-200
  • LinkedIn

UTS is a software company that provides custom software development services and off-the-shelf software products, including desktop and web applications. Customers choose UTS for their custom software development needs due to its expertise and efficient solutions.


16. Golpik

  • Website: golpik.com
  • Headquarters: Chicago, Illinois, United States
  • Founded: 2012
  • Headcount: 11-50
  • LinkedIn

Golpik is a custom software development company delivering high-performing and innovative solutions using disruptive technologies. They offer services in web and mobile application development, app maintenance, support, and modernization, DevOps, cloud services, video animation, and UI/UX design. They focus on driving digital transformation and providing continuous value to clients.


17. Taction Software LLC

Taction Software is a custom software development company that offers a wide range of services including CRM development, CMS development, mobile application development, ETL solutions, and healthcare software solutions.


18. Swip Systems

Swip Systems is a custom software development company based in the US which has been helping clients across numerous industries for over 26 years. They specialize in agile development and provide a wide range of programming capabilities including Microsoft .NET, Java, PHP, React, Angular, and mobile application development services.


19. Nexus Web Development

Nexus Software Systems is a custom software development company that provides powerful, proven, and guaranteed services. They specialize in custom software development, legacy software modernization, software testing services, ecommerce website development, embedded software development, software maintenance, and web application development.


20. apHarmony Inc. - Custom Software Development

  • Website: apharmony.com
  • Headquarters: Bartlett, Illinois, United States
  • Founded: 2013
  • Headcount: 11-50
  • LinkedIn

apHarmony provides custom software development services with a focus on quality and a rapid development environment. Their multidisciplinary team delivers fully tested software solutions that exceed expectations, offering fixed-price estimates, project management discipline and fault-tolerant, robust solutions throughout the development process.


21. DevMynd

  • Website: devmynd.com
  • Headquarters: Chicago, Illinois, United States
  • Founded: 2011
  • Headcount: 11-50
  • Latest funding type: Series A
  • LinkedIn

DevMynd Inc. is a digital product studio based in Chicago and San Francisco that specializes in custom software application design and development for mobile, web, and connected devices.


22. Center of Financial Technologies, INC.

Center of Financial Technologies, Inc. is a custom software development company providing cutting-edge solutions to a range of industries. The company offers Interactive Design Studio, custom software development, and Advanced Internet Business Solutions with a proven track record of Quality, On-Time, On-Budget Project Delivery.


23. Zc Designs INC

  • Website: zc-designs.com
  • Headquarters: Chicago, Illinois, United States
  • Founded: 2010
  • Headcount: 5001-10000
  • LinkedIn

ZC Designs is a web development agency that provides end-to-end services for website design, development, and digital marketing. The company offers web design, print design, logo design, vector artwork, and package design services to help clients improve their brand identity and connect with their target audience.


Want to find more software development companies?


If you want to find more companies that offer unique tech solutions ranging from customized software development, integration to mobile app development you can do so with Inven. This list was built with Inven and there are hundreds of companies like these globally.


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...and a lot more!