Top Software Development Companies in Illinois

Which one is the best for your company?

Takes 3 min. 100% free

Software Development United States Illinois

89 companies

Search location

Ratings

Budget

Top Featured Software Development Companies

Poterby Tech
(0 review)
Making brands matter
Welcome to Poterby Technologies, where innovation meets execution. We are a leading software development agency committed to transforming ideas into scalable and impactful digital solutions. With a passion for technology and a focus on excellence, we empower startups, businesses, and organizations to thrive in the digital age.
1 work in Software Development
Located in Lagos, Nigeria
From €1,000 for Software Development
Worked in Retail (+1)
Speaks English
1-10 members
Tera Group
4.9
(4 reviews)
E-commerce & Web Development Agency
Recommended
Tera Group is a Ukrainian web studio specializing in e-commerce development, custom web development, web design, Shopify, OpenCart, WordPress, WooCommerce, SEO, PPC, and long-term website support. We help online stores, retail businesses, manufacturers, beauty brands, service companies, and local businesses create modern, fast, user-friendly websites that are built not only to look good, but also to generate leads, sales, and long-term growth. Our team combines web designers, frontend and backend developers, e-commerce specialists, SEO/PPC experts, and project managers. We work with clients from the first idea and website structure to design, development, launch, analytics, advertising, and ongoing support. Our main focus is practical business value: clear communication, reliable technical implementation, responsive design, convenient website management, and solutions that help businesses grow online.
2 works in Software Development
Located in Cherkasy, Ukraine
Budget on request
Worked in Education (+2)
Speaks English, Russian(+1)
11-50 members
Instinctools
5
(10 reviews)
Your AI-powered Engineering Partner
Top awarded
Meet *instinctools - a global AI-powered software engineering company with over 25 years of experience. We help both SMBs and Enterprises build robust, scalable software solutions that excel in functionality and design. Our core services include: Agentic AI enablement Custom software development enhanced by deep AI expertise Digital product engineering Business process automation Legacy system modernization Advanced data analytics and visualization Cloud infrastructure and DevSecOps Headquartered in the USA (Maryland) and Europe (Germany), *instinctools offers convenient locations for meeting and collaborating directly with our clients. We have development centers in Poland, LATAM, India, and Kazakhstan that combine global expertise with a strong price-quality balance to ensure exceptional results across time zones. Our work is backed by ISO-certified quality standards, strategic partnerships with leading tech platform, and a long-standing commitment to engineering excellence. Instinctools holds a broad portfolio of regional and industry-specific certifications, including CIR, HIPAA, and other compliance frameworks required for regulated markets. The 2025 Annual Customer Satisfaction Index is 9.1 out of 10.
4 works in Software Development
Located in Potomac, United States (+4)
From €10,000 for Software Development
Worked in Construction (+10)
Speaks English, German(+1)
201-500 members
Plavno
5
(16 reviews)
AI-First Software Company: Secure Agents, Voice Assistants, and Scalable Cloud.
Top awarded
Plavno is a premier software development house with over 20 years of experience and a highly qualified team of experts in your industry. Fully-fledged teams of specialists cover each stage of product creation , from product management and analysis to design, development, testing, and ongoing support. We have a unique advantage , our pre-formed full teams work exclusively on products in their specific domains, such as Healthcare, E-Learning, FinTech, Travel & Hospitality, Fleet management and more. We can help you with: ✔ Web Development ✔ Mobile App Development ✔ CRM/CMS/SaaS Development ✔ Chat and Chatbot Development ✔ Web3 / DeFi / DAO / Smart contract ✔ WebRTC Stop struggling with bloated budgets and slow time-to-market. At Plavno, our fully-fledged team provides cost-effective and streamlined solutions that minimize technical debt and maximize your product's potential. With end-to-end support and a proven track record in the SAFe Scaled Agile Framework, we're the partner you need to succeed. LET’S CONNECT Let us help you choose the best path forward to deliver the perfect solution: Admin@plavno.io
7 works in Software Development
Located in Alexandria, United States (+2)
From €20,000 for Software Development
Worked in Beauty (+19)
Speaks English, French(+2)
51-200 members
BluePixel
5
(38 reviews)
Building digital platforms that fuel business impact
Top awarded
BluePixel is a technology, UX/UI, and artificial intelligence company specializing in designing, developing, and evolving digital platforms that generate real business impact. We help corporate companies, scaleups, and organizations with complex digital challenges to transform their products, websites, applications, and internal platforms into more efficient, scalable, and profitable experiences. Our approach combines product strategy, user research, UX/UI design, software development, technological architecture, analytics, and artificial intelligence in a single multidisciplinary team. Unlike a traditional agency, at BluePixel we don't just design interfaces or build software: we create digital systems prepared to grow, measure their performance, and continuously evolve based on real data. With over 10 years of experience and 200 projects developed. BluePixel has supported leading companies in creating high-impact digital solutions. Our promise is simple: develop people-centric platforms focused on return on investment and powered by artificial intelligence.
Looking for work in Software Development
Located in Miguel Hidalgo, Mexico
From €25,000 for Software Development
Worked in Sports (+31)
Speaks Spanish, English
51-200 members
KeyToTech
(0 review)
We help startups and companies develop and launch agile software products
Top awarded
KeyToTech is a software development agency. We deliver AI, mobile, web, and backend services to companies worldwide.
17 works in Software Development
Located in London, United Kingdom (+1)
From €5,000 for Software Development
Worked in Travel & Leisure (+12)
Speaks English, German(+2)
11-50 members

All Software Development Services in Illinois

12

Struggling to choose? Let us help.

Post a project for free and quickly meet qualified providers. Use our data and on-demand experts to pick the right one for free. Hire them and take your business to the next level.