Our industry experts identified the leading software development companies in Illinois that build high-performance solutions. Explore the best developers in the table below and use the filter to choose the best fir for your budget and needs.
ELEKS builds custom enterprise software across fintech, healthcare, energy, and logistics, with 1,000+ projects delivered over 30 years. It serves Fortune 500 companies and names like DPD and Drax. The software development firm is best for mid-to-large enterprises needing complex software development...
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Software Development Review from John Armstrong
ELEKS was able to take our vision and help us deliver an app that empowers retail shareholders to make their voices heard. They’ve brought a depth and breadth of technical expertise and user experience design to challenge us on our assumptions on how people would want to interact with the app. From a mobile development perspective, we wanted to go to market with both an Android and an iPhone simultaneously.
Software Development Review from Mark Battcock
We are very happy with our ELEKS partnership; the dedication of the team is exceptional. We would certainly recommend ELEKS and would be happy to work with them again. In fact, they continue to be our partner for the 2nd phase of the CDX project to add even more customer services to the website.
Software Development Review from Huntly Christie
What impressed me about ELEKS is the culture. There is a very strong culture of discipline and performance, and software is a profession where discipline is very important. Good software development can only happen with a strong work ethic, and I think the ELEKS team really understands that.
Simform is a premier digital engineering company specializing in Product Engineering, Cloud, Data, Agentic AI, and Enterprise Platform Innovation. We help enterprises and high-growth ISVs build digital experiences and scalable, enterprise-grade products what work at scale...
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Software Development Review from Andrew Muroff
We worked with Simform for many years ongoing software development on our core product, the Strainprint mobile outcomes tracker for medical cannabis patients. We have only positive things to say about their work product and attention to detail. We highly recommend them and will work with them again.
Software Development Review from Robel Yemane
I've been working with Simform for over six months now. The engagement began with bringing our subscription management platform in-house, and we've since expanded the partnership to other projects due to their broad skill set and consistent reliability. They've gone the extra mileeven over weekends and public holidaysto help us move faster when needed. Communication and project management have been excellent, with any issues swiftly addressed. It genuinely felt like Simform was invested in our success. Having worked with similar firms throughout my career, I can confidently say Simform stands out and comes highly recommended.
Software Development Review from Russ Makhauri
We worked with Simform to hire a front-end engineer for our SaaS platform. The process was well-organized, and their team was professional, responsive, and efficient. They quickly identified a candidate who met our technical requirements and ensured a smooth onboarding process.Simforms communication and project management were strong throughout the engagement. They were proactive in addressing feedback and remained flexible in adapting to our needs. While there is some room for improvement in developer vetting and quality assurance, their overall service was excellent.For companies looking to scale their development teams efficiently, Simform is a reliable partner. Their structured approach, responsiveness, and commitment to client satisfaction make them a great choice. We would recommend them without hesitation.
TekRevol is a globally recognized digital innovation company with 10 years of experience delivering high-impact mobile applications, AI-powered software, and scalable digital products. Every engagement begins with a clear roadmap, defined KPIs, and a commitment to measurable business outcomes...
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Mobile App Development Review from Aleksandra Puzyno I DYWIDAG Concrete
TekRevol did a great job with our app. They understood what we needed and finished everything on time. Working with them was easy and professional. I recommend them to anyone who wants a good app.
Web Development Review from Sidra Ansari
I recently collaborated with Tekrevol for the development and design of our marketing website, and the experience was outstanding. Their team showcased professionalism, creativity, and a deep understanding of web technologies. The communication was clear and effective, ensuring a smooth process from start to finish.The design and functionality of our website exceeded our expectations, making it not only visually appealing but also user-friendly and responsive across all devices. The project was delivered on time and within budget, reflecting Tekrevol's dedication to quality and client satisfaction.I highly recommend Tekrevol to anyone in need of top-quality web development and design services. Their expertise and customer-focused approach truly set them apart.
Mobile App Development Review from Sara Kraeski
TekRevol created a design aimed at enhancing the website's accessibility, with the anticipation of boosting traffic and conversion rate.Their team representative effectively communicated clear timelines and objectives. Notably, they exceeded expectations and delivered exceptional application development services. Their excellent communication and responsiveness played a vital role in the project's success.
CIDT builds blockchain, Web3, and SaaS products from concept to launch. We combine startup agility with enterprise - grade engineering to deliver secure, scalable, and transparent solutions fast and within budget...
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Web3 Development Review from Ihor Palteka
We worked with CIDT on building a web3 tax module for our platform. The team created the full backend: blockchain data processing, NFT and DeFi event detection, VAT logic, and reporting. Communication was easy, and we always talked in Slack with regular Zoom calls to check progress. The system works stable and fits well into our product. We had some extra design iterations, but the team handled them quickly. Overall, it was a good and smooth cooperation, and we are happy with the final result.
Web3 Development Review from Dan Baryshnyk
Working with Consider It Done Technologies has been an outstanding experience. Their team helped us turn the idea of TradeVibe into a fully functional validator and staking automation platform. They managed the entire process - from product architecture and design to backend development and DevOps - with impressive technical precision and attention to detail.
Blockchain Review from Hanna Korovianska
We partnered with CIDT to integrate a cryptocurrency payment module into a custom eCommerce platform we were developing for one of our clients. Our goal was to add a secure and seamless crypto payment option without disrupting the existing checkout flow.The CIDT team handled everything related to blockchain integration from wallet connections and smart contract setup to documentation and testing. Their work was well-structured, efficient, and fully aligned with our development process.A special mention goes to Ramil, CIDTs CTO, whose technical expertise and leadership were outstanding. He guided our team through the blockchain-specific parts of the project, explained complex concepts in simple terms, and helped ensure that the solution was both reliable and easy to maintain.All milestones were delivered on time, communication was smooth, and the final integration performed flawlessly. Within the first three months after launch, over 3% of transactions were completed via crypto payments, with a higher average order value than traditional methods.Overall, working with CIDT was an excellent experience. Theyre a professional, knowledgeable, and trustworthy team, and we look forward to future collaborations.
Atomic Object is a top-rated custom software design and development consultancy. Our co-located, U.S.-based team works with executives to improve their bottom line by delivering new products, enhancing existing products, modernizing legacy products, and integrating AI into their software systems...
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Consumer IoT Review from Mason Ferlic
GripFusion is a sports technology startup developing Tactile Intelligence. Our flagship product, the ForceBall, is the first grip-sensing baseball. We approached Atomic Object with the challenge to build a React Native iPad app to connect with the embedded electronics over BLE and visualize sensor data in real time. Atomic stepped up to the plate and hit a home run! They took early R&D code and we're able to successfully navigate IoT challenges, large amounts of sensor data, and seamless UX. The developer team worked closely with our technical staff to incorporate evolving firmware and hardware improvements. The design team did hundreds of hours of user discovery and product feedback to ensure we deliver a cutting-edge experience. Overall, Atomic has the breadth and depth to tackle complex hardware-software systems.
Daniel Schoonmaker's Review Sourced from Google
Atomic Object is one of the best companies across the board in Michigan. Fantastic maker of custom-software solution and a model of organizational thought leadership. I've been working with the company in some capacity for nearly 20 years and learn something new in every interaction I've ever had.More than that, they are a value-centered organization that you will be proud to partner with. They've built this company the right way. An impactful community leader and employer of choice.
Rik Cordero's Review Sourced from Google
As a freelance Video Producer, I recently wrapped up another fun project with the folks over at Atomic Object, and I've gotta say, it was an experience worth mentioning. Collaborating with their marketing team on a series of authentic and engaging customer-facing and internal videos was nothing short of fantastic. Their seamless planning and logistics during pre-production, coupled with easy going personalities during production, made the process a breeze. Post-production brought our collective vision to life with meticulous story editing and videos that reflect their unique culture and values. Their team's dedication to kindness, empathy, and diversity made this collaboration not just successful, but truly enjoyable.
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