Best Illinois .Net Development Companies

76 Companies - Rankings updated: September 03, 2026

Each agency undergoes DesignRush evaluation for professional expertise and genuine client satisfaction to assist your search. Some featured placements are paid.

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United States × Illinois × .Net Development × Sort by: Avg Hourly Price: High to Low × Clear Filters

  • Talentica Software

    Verified Verified by the DesignRush team for authenticity and credibility.
    Building Products AI-Native Way

    Building Products AI-Native Way

    Talentica offers product engineering, with a playbook-driven approach refined across more than 200 products over 22 years. Its 200+ GenAI-certified developers deployed AI features in 60% of products. Recommended for startups and SaaS companies needing MVP development, AI integration, or product scaling...

    Top Services:

    • Software Development
    • AI Development
    • IT Services
    • Big Data Analytics
    • Blockchain
    • Show more
    Location
    Chicago, Illinois
    Number of Employees
    500 - 999
    Average Hourly Rate
    $30/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    7 Projects Listed
    View Profile
    4.9 4.9 (27)
    4.4 4.4 (244)

  • Simform

    Your Product Engineering & Gen AI Partner

    Your Product Engineering & Gen AI Partner

    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...

    Top Services:

    • Software Development
    • Cloud Consulting
    • AI Development
    • Big Data Analytics
    • DevOps Consulting
    • Show more
    Location
    Chicago, Illinois
    Number of Employees
    1000 & Up
    Average Hourly Rate
    $30/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    8 Projects Listed
    View Profile
    4.9 4.9 (16)
    4.8 4.8 (21)

  • SDLC Corp

    Your Technology Partner

    Your Technology Partner

    Our commitment is to SDLC Corp’s excellence in delivering transformative Software Development solutions. Our extensive expertise ensures success in even the most complex mobile, web, AI, and blockchain projects. We blend innovation with precision to drive growth and empower businesses worldwide...

    Top Services:

    • Software Development
    • Mobile App Development
    • Web Development
    • AI Development
    • Blockchain
    • Show more
    Location
    Batavia, Illinois
    Number of Employees
    250 - 499
    Average Hourly Rate
    $30/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    53 Projects Listed
    View Profile
    4.9 4.9 (11)
    4.5 4.5 (11)

  • AlgoRepublic

    Our expertise makes a positive impact to your business

    Our expertise makes a positive impact to your business

    AlgoRepublic offers comprehensive business automation, product development, and software/web development services to clients globally. Our expertise ensures innovative and efficient solutions tailored to meet the diverse needs of businesses worldwide...

    Top Services:

    • Software Testing
    • Blockchain
    • Mobile App Development
    • Software Development
    • eCommerce Development
    • Show more
    Location
    Chicago, Illinois
    Number of Employees
    250 - 499
    Average Hourly Rate
    $30/hr
    Minimal Budget
    Under $1,000
    Portfolios Count
    1 Project Listed
    View Profile
    4.3 4.3 (1)
    4.8 4.8 (18)

  • Tech Admire

    Empowering Tomorrows Innovations Today

    Empowering Tomorrows Innovations Today

    At Tech Admire, we are more than just a company, we are a dynamic force of creativity, aspiration, and enthusiasm. Established to provide cutting edge services and IT solutions, Tech Admire brings together extensive experience and a dedicated team committed to driving growth and innovation in every project...

    Top Services:

    • Digital Services
    • Design Services
    • Web Design
    • eCommerce Development
    • WordPress Website Design
    • Show more
    Location
    Bartlett, Illinois
    Number of Employees
    Under 49
    Average Hourly Rate
    $30/hr
    Minimal Budget
    $1,000 - $10,000
    View Profile
    4.3 4.3 (1)

  • Debut Infotech

    Verified Verified by the DesignRush team for authenticity and credibility.
    AI-Powered Innovation, Delivered

    AI-Powered Innovation, Delivered

    Debut Infotech is a leader in advanced technological solutions, specializing in AI, Blockchain, Smart Contracts, IoT, and mobile and web development...

    Top Services:

    • AI Development
    • Web Development
    • Blockchain
    • Mobile App Development
    • Software Development
    • Show more
    Location
    Springfield, Illinois
    Number of Employees
    100 - 249
    Average Hourly Rate
    $30/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    17 Projects Listed
    View Profile
    5.0 5.0 (17)

  • Noboxidea

    Crafting Digital Echoes.

    Crafting Digital Echoes.

    Nobox Idea delivers exceptional digital solutions with a focus on web design, development, and maintenance. Our services extend to custom software and app development, ensuring tailored solutions for your needs. We specialize in SEO to enhance your online visibility and offer strategic social media marketing...

    Top Services:

    • Web Design
    • Web Development
    • Mobile App Development
    • Software Development
    • Graphic Design
    • Show more
    Location
    Naperville, Illinois
    Number of Employees
    Under 49
    Average Hourly Rate
    $30/hr
    Minimal Budget
    Under $1,000
    View Profile

  • TekReboot

    Refine, Re-innovate, Rediscover with TekReboot

    Refine, Re-innovate, Rediscover with TekReboot

    Delegate your business solution development to our trusted experts in the field of IT services, Software (full-stack) development, Web design, App design, and Digital marketing...

    Top Services:

    • Digital Services
    • Web Development
    • Software Development
    • Mobile App Development
    • Web Design
    • Show more
    Location
    Chicago, Illinois
    Number of Employees
    Under 49
    Average Hourly Rate
    $30/hr
    Minimal Budget
    $1,000 - $10,000
    View Profile

  • BitsWits

    Where Exceptional Apps Are Just The Beginning

    Where Exceptional Apps Are Just The Beginning

    BitsWits builds iOS, Android, Flutter, and React Native apps alongside AI and blockchain solutions, with a four-week delivery guarantee. Its work spans healthcare, fintech, and eCommerce, making the software development company suitable for businesses needing fast, affordable mobile app development...

    Top Services:

    • Mobile App Development
    • Software Development
    • VR/AR
    • Blockchain
    • AI Development
    • Show more
    Location
    Chicago, Illinois
    Number of Employees
    100 - 249
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    12 Projects Listed
    View Profile
    5.0 5.0 (58)
    5.0 5.0 (11)

  • Tech Gropse

    Next-Gen Apps for Next-Gen User

    Next-Gen Apps for Next-Gen User

    Passionate about crafting innovative digital solutions, TechGropse is a leading technology firm that specializes in mobile app development, web development, and emerging technologies. Our commitment to excellence, creativity, and client satisfaction sets us apart...

    Top Services:

    • Mobile App Development
    • Web Development
    • Software Development
    • AI Development
    • IoT
    • Show more
    Location
    Chicago, Illinois
    Number of Employees
    100 - 249
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    23 Projects Listed
    View Profile
    4.9 4.9 (24)

  • Infograins

    Infograins Software Solutions, Innovate, Automate, Dominate

    Infograins Software Solutions, Innovate, Automate, Dominate

    Infograins Software Solutions Pvt. Ltd., established in 2013 by Ajay and Vipin Shukla, delivers innovative IT services, including blockchain solutions, mobile app development, custom software development, staff augmentation, and AI integration. Our dedicated team provides goal-oriented solutions...

    Top Services:

    • Mobile App Development
    • Staff Augmentation
    • Blockchain
    • Software Development
    • AI Development
    • Show more
    Location
    Chicago, Illinois
    Number of Employees
    100 - 249
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    4 Projects Listed
    View Profile
    4.9 4.9 (21)

  • a1qa

    Your helping hand in software quality

    Your helping hand in software quality

    a1qa, a global pure-play QA and test automation provider, brings over 20 years of expertise in delivering quality assurance and software testing services. The organization adjusts its workflows to comply with ISO 9001/27001 standards...

    Top Services:

    • Software Testing
    • Managed Services
    • IT Services
    • Staff Augmentation
    • Show more
    Location
    Chicago, Illinois
    Number of Employees
    1000 & Up
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    16 Projects Listed
    View Profile
    4.9 4.9 (10)

  • SITE IT NOW

    AI-Driven SEO & Web Solutions That Grow Businesses

    AI-Driven SEO & Web Solutions That Grow Businesses

    SITE IT NOW is a leading AI-driven SEO and web development agency specializing in custom websites, mobile apps, digital marketing, and secure hosting. We help businesses rank higher, get discovered in AI search, generate more leads, and accelerate growth...

    Top Services:

    • Web Design
    • Web Development
    • Mobile App Development
    • SEO
    • eCommerce Development
    • Show more
    Location
    Chicago, Illinois
    Number of Employees
    50 - 99
    Average Hourly Rate
    $25/hr
    Minimal Budget
    Under $1,000
    Portfolios Count
    6 Projects Listed
    View Profile
    4.6 4.6 (3)
    5.0 5.0 (35)

  • 530 Expert

    Digital Marketing That Turns Heads, Clicks, And Converts

    Digital Marketing That Turns Heads, Clicks, And Converts

    We are the digital partners for small businesses in the US, Canada, Europe, and Australia. Specializing in expert SEO, AI-powered marketing, and performance optimization, we help you achieve real, measurable growth...

    Top Services:

    • SEO
    • Web Design
    • Web Development
    • Social Media Marketing
    • PPC
    • Show more
    Location
    Buffalo Grove, Illinois
    Number of Employees
    Under 49
    Average Hourly Rate
    $25/hr
    Minimal Budget
    Under $1,000
    Portfolios Count
    1 Project Listed
    View Profile

  • Desire InfoWeb Pvt. Ltd

    Certified Microsoft Partner

    Certified Microsoft Partner

    DesireInfoWeb is a Microsoft-focused consulting and technology services company that helps organizations improve productivity, collaboration, and digital transformation through AI and Microsoft 365 solutions...

    Top Services:

    • Web Development
    • eCommerce Development
    • SEO
    • Digital Marketing
    • Social Media Marketing
    • Show more
    Location
    Elgin, Illinois
    Number of Employees
    Under 49
    Average Hourly Rate
    $25/hr
    Minimal Budget
    Under $1,000
    View Profile
    4.6 4.6 (30)

  • Moon Technolabs

    Transforming Businesses withAI-Powered Solutions

    Transforming Businesses withAI-Powered Solutions

    Moon Technolabs, an ISO-certified global software company, has 17+ years of experience, 1650+ projects, and 400+ experts. We specialize in custom software, web, and mobile app development, delivering innovative solutions that exceed client expectations...

    Top Services:

    • AI Development
    • IoT
    • Software Development
    • Mobile App Development
    • DevOps Consulting
    • Show more
    Location
    Chicago, Illinois
    Number of Employees
    250 - 499
    Average Hourly Rate
    $25/hr
    Portfolios Count
    12 Projects Listed
    View Profile
    5.0 5.0 (14)

  • Codiant

    AI-Driven Software Development & Digital Innovation

    AI-Driven Software Development & Digital Innovation

    Codiant, operating as a subsidiary of Yash Technologies, stands as an AI-Driven Software Development & Digital Innovation, with a specialization in Enterprise Mobility, Web Application Development, UI/UX Development, and Application Maintenance and Support Services...

    Top Services:

    • AI Development
    • Mobile App Development
    • Web Design
    • Web Development
    • eCommerce Development
    • Show more
    Location
    Chicago, Illinois
    Number of Employees
    250 - 499
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    64 Projects Listed
    View Profile
    5.0 5.0 (6)

  • iCareBilling

    Revolutionize Your Healthcare Practice.

    Revolutionize Your Healthcare Practice.

    iCareBilling is a private American Healthcare IT Company that provides Insurance Credentialing, Medical Billing and other services to the healthcare industry across the United States, integrating services with any EHR, Practice Management, or Medical Billing Software...

    Top Services:

    • BPO
    • Web Design
    • WordPress Website Design
    • Managed Services
    • IT Services
    • Show more
    Location
    Chicago, Illinois
    Number of Employees
    500 - 999
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $1,000 - $10,000
    View Profile
    5.0 5.0 (6)

  • Arccus

    Promising diverse capabilities

    Promising diverse capabilities

    Arccus is a leading digital agency delivering cutting-edge mobile apps, responsive websites, custom ERP solutions, and AI-driven automation. We partner with startups, enterprises, and governments to design and build scalable, smart technology that drives growth and digital transformation...

    Top Services:

    • Mobile App Development
    • Web Development
    • AI Development
    • Software Development
    • VR/AR
    • Show more
    Location
    Naperville, Illinois
    Number of Employees
    Under 49
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    3 Projects Listed
    View Profile

  • Panacea Infotech

    Delivering Professional Excellence

    Delivering Professional Excellence

    Our infrastructure enable us to make sure the right balance of work. We have designed our work place smartly to perform different activities such as interaction, meetings and conference. We have separate seating areas for our business, technical and creative units along with privately-held area for server...

    Top Services:

    • eCommerce Development
    • Web Development
    • AI Development
    • Mobile App Development
    • Software Development
    • Show more
    Location
    Evanston, Illinois
    Number of Employees
    500 - 999
    Average Hourly Rate
    $24/hr
    Minimal Budget
    $10,000 - $25,000
    View Profile

  • Aqua Design Works

    Designing Digital Success, One Creative Pixel at a Time.

    Designing Digital Success, One Creative Pixel at a Time.

    We are your partner in digital success. We got your back, from creative logo, powerful websites, branding to digital marketing solutions. We help businesses elevate their online presence and help them connect with their audience effectively. Let's create, expand, and grow together!...

    Top Services:

    • Graphic Design
    • Logo Design
    • Branding
    • Web Design
    • WordPress Website Design
    • Show more
    Location
    Chicago, Illinois
    Number of Employees
    Under 49
    Average Hourly Rate
    $20/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    5 Projects Listed
    View Profile
    3.5 3.5 (30)

  • Marqade Inc

    Accelerate Your Business Success With #No. 1 Leading Digital Marketing Company

    Accelerate Your Business Success With #No. 1 Leading Digital Marketing Company

    Harness our one-of-a-kind digital marketing solutions and leave a lasting impression on your clients. Marqade is the #1 digital marketing company that has delivered unmatched results to brands since its inception. We specialize in SEO, PPC, content marketing & quality lead generation...

    Top Services:

    • Branding
    • Design Services
    • Digital Strategy
    • Web Design
    • eCommerce Development
    • Show more
    Location
    Chicago, Illinois
    Number of Employees
    50 - 99
    Average Hourly Rate
    $15/hr
    Portfolios Count
    3 Projects Listed
    View Profile
    4.8 4.8 (5)
    5.0 5.0 (1)

  • Vaival Technologies

    We Design and Code for Futuristic Apps

    We Design and Code for Futuristic Apps

    We are a consultancy and software development company that provides cutting edge engineering solutions. We have helped Fortune 500 companies untangle complex issues during their digital evolution journey. Since 2010, we have proved that we are a visionary organization and a reliable software engineering...

    Top Services:

    • Software Development
    • Mobile App Development
    • Blockchain
    • Web Development
    • WordPress Website Design
    • Show more
    Location
    Chicago, Illinois
    Number of Employees
    100 - 249
    Average Hourly Rate
    $15/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    9 Projects Listed
    View Profile

  • Probey Services

    Verified Verified by the DesignRush team for authenticity and credibility.
    World's #1 Rated & Reviewed App, Website & Software Development Company

    World's #1 Rated & Reviewed App, Website & Software Development Company

    Probey Services builds websites and mobile apps on WordPress, Shopify, and Flutter, for clients like Lineage and Gunzilla Games. Its team of 320+ developers covers eCommerce, healthcare, and edtech across 30+ countries. Best fit for SMBs needing affordable development services...

    Top Services:

    • Mobile App Development
    • Software Development
    • Web Development
    • Web Design
    • WordPress Website Design
    • Show more
    Location
    Chicago, Illinois
    Number of Employees
    250 - 499
    Average Hourly Rate
    $10/hr
    Minimal Budget
    Under $1,000
    Portfolios Count
    94 Projects Listed
    View Profile
    5.0 5.0 (110)
    5.0 5.0 (1)

  • EnlightVision Technologies Pvt. Ltd

    Premier Tech Solutions

    Premier Tech Solutions

    EnlightVision is the partner of choice for many of the worlds leading enterprises, SMEs, and technology innovators. We elevate businesses through custom software development, product design, QA, and consultancy services. Our commitment is to deliver cutting-edge solutions tailored to your unique needs...

    Top Services:

    • Mobile App Development
    • AI Development
    • Software Development
    • IT Services
    • Web Development
    • Show more
    Location
    St. Charles, Illinois
    Number of Employees
    Under 49
    Average Hourly Rate
    $10/hr
    Minimal Budget
    Under $1,000
    View Profile

  • Codiantix

    Designing Digital Experiences Developing Future-Ready Solutions

    Designing Digital Experiences Developing Future-Ready Solutions

    Codiantix is a software and creative agency delivering next-generation digital solutions from custom websites and mobile apps to full-stack software systems and UI/UX design. We help startups and enterprises scale with technology that performs...

    Top Services:

    • Software Development
    • Mobile App Development
    • Web Design
    • Web Development
    • Show more
    Location
    Chicago, Illinois
    Number of Employees
    Under 49
    Average Hourly Rate
    $5/hr
    Minimal Budget
    Under $1,000
    Portfolios Count
    2 Projects Listed
    View Profile

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