All .NET Development Companies in Illinois
Simpalm | Digital Product Development Company
5(21 reviews)Creating custom app, web and AI solutions
RecommendedSimpalm is a leading digital product development company in the USA, specializing in UI/UX design, mobile app development, web development, AI solutions, and SaaS platforms. With offices in Maryland, Chicago and New York, we’ve been building transformative digital solutions for startups, established companies, and nonprofits. Our digital solutions have solved challenges for healthcare, financial services, construction, education, IoT, charities, associations and SaaS industry. Our team of experienced project managers, designers, developers, and testers combines creativity with cutting-edge technology to turn ideas into high-performing apps, websites, and AI-driven systems. We focus on delivering products that enhance efficiency, scalability, and user experience — helping organizations grow faster in today’s digital-first world. With over 400+ successful deployments, Simpalm has become a trusted partner for businesses looking to design, develop, and scale their digital products. Beyond development, we offer continuous support and maintenance to ensure your solution remains secure and future-ready. Our Main Services: Discovery and Design : Define requirements, create wireframes, and design visually engaging UI/UX for your app or website. Custom App Development : Build AI-powered mobile apps using React Native, Swift, Kotlin, and Flutter. Website Design and Development : Craft CMS-based websites in WordPress, Drupal, or Hubspot CMS to represent your brand or organization effectively. Web and SaaS Applications : Develop scalable SaaS or web portals using React, Node.js, .NET, and Python. AI Strategy and Development : Create tailored AI strategies, chatbots, and automation workflows that empower your business. Support and Maintenance : End-to-end technical support to keep your products performing seamlessly.Looking for work in .NET DevelopmentLocated in North Bethesda, United States (+4)From €3,000 for .NET DevelopmentWorked in Home Services (+7)Speaks English51-200 membersDebut Infotech
5(8 reviews)Results, Not Promises
RecommendedDebut Infotech is an AI-augmented blockchain and software development company helping organizations across financial services, healthcare, supply chain, and digital platforms build systems that perform reliably in complex, regulated environments. Founded in 2011 and blockchain-native since 2015, the company brings engineering discipline and technology depth to enterprises moving from fragmented pilots to production-grade systems. With delivery centers across the USA, UK, Canada, and India, Debut Infotech combines regional market understanding with globally distributed engineering capability — enabling clients to move with speed, consistency, and governance. Service areas: Artificial intelligence and generative AI — Enterprise LLM integration, AI agent development, retrieval-augmented generation (RAG) pipelines, predictive analytics, computer vision, and intelligent process automation embedded at the system architecture level. Blockchain and Web3 development — Smart contract engineering, DeFi protocol development, real world asset (RWA) tokenization, cryptocurrency exchange infrastructure, and enterprise blockchain on Hyperledger Fabric and Corda. Mobile application development — Native iOS, Android, and cross-platform applications (React Native, Flutter) architected for AI integration, enterprise-grade security, and sustained performance under production load. Web and software development — Full-stack web platforms, SaaS products, and enterprise software systems engineered API-first, designed for long-term maintainability and organizational scale Proven Delivery: $62M+ raised across client platforms including Ifinca, IntegraLedger, Everledger, and TĒM 90% customer success score across enterprise engagements 15 years of enterprise software delivery Fortune 500 clients and high-growth startups across 25+ industry verticals 50–249 engineers spanning AI, blockchain, and software disciplinesLooking for work in .NET DevelopmentLocated in Cook County, United States (+2)From €10,000 for .NET DevelopmentWorked in Others (+11)Speaks English51-200 membersInstinctools
5(10 reviews)Your AI-powered Engineering Partner
Top awardedMeet *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.Looking for work in .NET DevelopmentLocated in Potomac, United States (+4)From €10,000 for .NET DevelopmentWorked in Construction (+10)Speaks English, German(+1)201-500 membersELEKS
5(1 review)Your trusted partner for guaranteed software delivery
Top awardedELEKS is your trusted partner for guaranteed software delivery. Combining over 30 years of industry insight with cutting-edge AI technology, we help businesses worldwide deliver their unique software vision through bespoke full-cycle solutions.Looking for work in .NET DevelopmentLocated in Las Vegas, United States (+14)From €20,000 for .NET DevelopmentWorked in Energy & Oil (+10)Speaks English, German(+1)1001-5000 membersAkveo
5(1 review)Here to Build
Akveo is an international software development firm that creates innovative digital solutions to help businesses grow. Specializing in custom software, low-code/no-code platforms, and UI/UX design, we empower companies of all sizes to turn their concepts into scalable, high-performing applications. As a certified Retool development partner and React Native expert (https://www.akveo.com/services/mobile-application-development/react-native), Akveo has successfully completed 500+ projects across sectors like finance, healthcare, eCommerce, and EdTech. Our team of experienced software engineers, designers, and business analysts works collaboratively to deliver top-quality solutions. From cross-platform mobile development to MVP creation and AI-driven automation, we are dedicated to providing exceptional results that surpass client expectations.Looking for work in .NET DevelopmentLocated in Warsaw, PolandFrom €3,000 for .NET DevelopmentWorked in Insurance (+6)Speaks English, German(+2)51-200 membersFulminous Software
5(38 reviews)WE LOVE TO BUILD ASK FOR IT AND HAVE IT
Top awardedWe are Fulminous Software, a skilled web and mobile app development company with a proven history of creating popular and profitable apps. We're known for our knack for enhancing existing apps and websites to make them even better, ensuring people keep downloading and enjoying them. Our dedicated team is here to turn your ideas into reality. The company’s biggest strength is its team which I a mix of most ingenious and focused individuals who are adroit in whatever they do. They believe in delivering flawless and reliable solutions to clients that match business needs and drive business growth. We are looking for strategic partnerships from around the globe. If you are interested please contact us today. Client's Feedback About US: https://clutch.co/profile/fulminous-software-private#highlights https://www.bark.com/en/in/company/fulminous-software-private-limited/9AKJO/ Our Key services: * Custom Software development * Mobile App Development (Android App, iPhone App, Cross-Platform App) * Custom Game Development (AR, VR, iOS, Android, NFT, Metaverse, 2D, 3D) * Salesforce Development (Lightning, Implementation, Consulting) * Web Development * Mobile Game Development * Desktop Game Development * Xamarin App Development * Wearable Devices App Development * Enterprise App Development * CRM & ERP Development * Digital MarketingLooking for work in .NET DevelopmentLocated in Clarendon County, United States (+2)From €1,000 for .NET DevelopmentWorked in Video games (+9)Speaks English51-200 membersChudovo OÜ
5(21 reviews)Complex Systems Implementation
Highly recommendedTop awardedChudovo is a custom software development company, focused on complex systems implementation. Customers rely on our expertise, appreciate transparency in time, budget, visibility of work progress, and our assistance in achieving their business objectives with high-quality solutions. Our teams follow best development practices and methodologies and apply their experience in such industries as healthcare, finance, e-commerce, logistics, telecommunications, and others. In our portfolio, we have over 190 successfully implemented web, mobile, desktop, cloud, embedded, and AI projects. With our commitment to innovation, we bring together cutting-edge technologies, visionary strategies, and creative minds to breathe life into your visions and ideas.33 works in .NET DevelopmentLocated in New York, United States (+4)From €3,000 for .NET DevelopmentWorked in Hospitals & Healthcare (+19)Speaks English, German(+2)51-200 membersDebugist
(0 review)YOU THINK WE BUILD
At Debugist, we believe technology should work for people not the other way around. Born from 7 years of building real software for real businesses, we are a full service digital agency offering everything from custom web and app development to cutting edge AI automations and AI receptionists. We partner with startups, small businesses, and growing enterprises who want more than just a vendor they want a team that shows up, delivers on time, and never stops pushing for better. Our work spans web development, mobile apps, ERP systems, digital marketing, graphic design, IT consulting, and AI powered solutions designed to give every business the competitive edge it deserves. We are not the biggest agency. We are the most committed one. From the first conversation to the final delivery and every update after Debugist is your technology partner for the long run. You think it. We build it.Looking for work in .NET DevelopmentLocated in Hoffman Estates, United StatesFrom €1,000 for .NET DevelopmentWorks in multiple industriesSpeaks English11-50 membersEchoGlobal
5(2 reviews)★ Hire Top Remote Software Developers
Top awarded☂ ISO 27001 Certified Tech Talent Provider | ⚑ Eastern Europe & LATAM | ◉ Trusted by Fortune 500 Companies | ✔ 10+ Years of Experience | ✱ 1-Week Risk-Free TrialLooking for work in .NET DevelopmentLocated in Miami, United States (+4)From €10,000 for .NET DevelopmentWorked in Construction (+8)Speaks English, Estonian(+3)11-50 membersPlavno
5(16 reviews)AI-First Software Company: Secure Agents, Voice Assistants, and Scalable Cloud.
Top awardedPlavno 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.io3 works in .NET DevelopmentLocated in Alexandria, United States (+2)From €10,000 for .NET DevelopmentWorked in Banking & Financials (+19)Speaks English, French(+2)51-200 membersAppCrops
5(58 reviews)Turning Ideas Into Interactive Solutions
Highly recommendedAt AppCrops, we go beyond development. We partner with businesses to design, build, and scale powerful digital products that drive real growth. Our team of top app developers, UI/UX designers, and business analysts combines strategic thinking with technical excellence to deliver solutions that are both innovative and reliable. Our mission is simple: to help businesses streamline operations, unlock new opportunities, and stay competitive in an increasingly digital world. From startups to enterprises, we provide end-to-end technology services designed to turn ideas into scalable solutions. Core Services Mobile App Development High-performance iOS, Android, and cross-platform mobile applications designed with user experience, scalability, and reliability in mind. Web Design & Development Modern, responsive websites and web applications built for performance, usability, and scalability. Designed to strengthen your online presence and convert visitors into customers. Custom Software Development Secure, scalable, and tailor-made software solutions built around your specific business requirements from enterprise platforms to specialized digital tools. ERP Systems & Enterprise Solutions Robust ERP platforms that centralize business operations, streamline workflows, and improve organizational efficiency. Startup Solutions & MVP Development We help startups move from concept to launch by building scalable MVPs, validating product ideas, and preparing platforms for growth. UI/UX Design Human-centered design that focuses on usability, clarity, and visual impact to create intuitive digital experiences. Digital Transformation Consulting Strategic guidance to help businesses adopt modern technologies, optimize processes, and successfully navigate digital transformation. Why Partner with AppCrops • Agile development process • Collaborative approach • Experience across industries • Transparent communication and project delivery • Competitive pricing without compromising qualityLooking for work in .NET DevelopmentLocated in South Houston, United StatesFrom €1,000 for .NET DevelopmentWorked in Clothing & AccessoriesSpeaks English51-200 membersSociiLabs LLC
5(1 review)Solving big problems with even bigger brains (and AI).
At Sociilabs, we harness the power of artificial intelligence to deliver innovative solutions tailored to address the challenges of today's dynamic business landscape. Our commitment is to empower organizations with cutting-edge technologies that drive efficiency, enhance decision-making, and foster growth. With a blend of AI expertise and industry insights, we collaborate closely with our clients to design and implement solutions that not only meet their immediate needs but also pave the way for future opportunities. Whether it's optimizing operations, improving customer engagement, or unlocking new revenue streams, Sociilabs is your trusted partner for transformative AI solutions. Join us on our journey to redefine what's possible with AI and make a lasting impact on businesses and communities worldwide. Connect with us to explore how we can help your organization thrive in the age of AI.Looking for work in .NET DevelopmentLocated in Sheridan, United StatesFrom €1,000 for .NET DevelopmentWorked in Marketing & Advertising (+1)Speaks English, Turkish(+1)1-10 membersAccedia JSC
5(12 reviews)Exceeding expectations
Highly recommendedTop awardedAccedia is a premier European IT services company, specializing in technology consulting and custom software development. Founded in 2012 in Sofia, Bulgaria, Accedia has established itself as a trusted global technology partner, recognized for its exceptional team culture and commitment to excellence. With a global presence spanning 5 continents and over 20 countries, we serve a diverse client base, from South Africa and Japan to the United States and the Nordics. Accedia is particularly strong in key sectors such as Manufacturing & Automotive, Banking & Fintech, Information Technology, and Energy & Utilities. Our portfolio harnesses the power of transformative technology by: Creating user-centric digital experiences for web and mobile platforms Harnessing and analyzing data for valuable business insights Guiding organizations in their cost-effective use of cloud services Accelerating practical gains from AI adoption Elevating cyber security to protect organizational assets Developing tailored Line-of-Business applications Our dedication to quality has earned us global recognition. Accedia was ranked among the top 100 global service providers by IAOP in 2023 and 2024, and we've been repeatedly listed by the Financial Times and Deloitte as one of Europe’s fastest-growing tech firms. As a long-standing certified Microsoft and AWS partner, we further enhance our ability to develop custom solutions that empower businesses in various domains. Accedia integrates Environmental, Social, and Corporate Governance (ESG) principles throughout our operations and value chain. Certified for ISO 14001 Environmental Management since 2015, we’ve been on a carbon neutrality journey ever since. Our focus on sustainable software development, green procurement, and client education positions us as an industry leader in driving environmentally responsible IT initiatives.3 works in .NET DevelopmentLocated in Boston, United States (+1)From €1,000 for .NET DevelopmentWorked in Banking & Financials (+1)Speaks English, Bulgarian(+1)201-500 membersStartbit IT Solutions Pvt. Ltd.
5(32 reviews)Designing The Future
Top awardedStartbit IT Solutions Pvt. Ltd. an ISO 9001 and 27001 certified company, is a Global IT Services provider company with expertise in outsourced product development and custom software development focusing on web app development, mobile app development, and tailor-made solutions, etc. We consistently deliver offshore outsourcing solutions, quality software products, and solutions to start-ups, and mid-size and large enterprises worldwide. We have 2200+ satisfied clients worldwide. We develop web, windows, and mobile applications using all the latest technologies i.e. SalesForce, SAP, Microsoft Technologies (ASP.Net, C#, VB.Net, Azure, Entity/MVC framework, SSRS, Crystal Reports, etc.), MEAN Stack, Front-end, PHP, Laravel, React, MERN, WordPress, CodeIgniter, Shopify, Ruby on Rails, Android Development, iPhone development, Hybrid mobile app, etc. WHAT WE DO? Customized Software Development: We develop custom web and mobile app solutions from conceptualization to market launch covering your business needs. eCommerce Solutions: We have end-to-end e-commerce solutions with any kind of customization and store management consultancy. Staffing Solutions: We deploy our team on client’s projects in an offshore model to work with their local team/clients following all the legal compliance. Process Automation: We help our clients to automate their current manual processes with our industry-proven solutions to increase their overall productivity. Quality And Reliability: Team Startbit is focused and committed to quality output, we follow all the best practices to deliver it. We follow ISO and SOC compliance. Our clients rely on us in terms of data, processes, technologies, and deliverables, therefore we have been their back-end partners for many years and add value to it every year passing by. Startbit has a team of 85+ full-time resources and more than 50% of them are certified in various areas – Scrum Master, Azure, AWS, Shopify, etc. Our team members are available during USA, UK, and India business hours . Team Startbit has expertise in web application development, framework knowledge, project management tools, and all required documentation. We are a young, agile team with a passion for delivering superior software solutions, products, and customer services. Our team is well qualified and dedicated to work; most are certified by Microsoft and Sun Microsystems. Being a customer-driven company, Team Startbit constantly strives to provide the highest quality services to its customers.3 works in .NET DevelopmentLocated in Jaipur, IndiaFrom €500 for .NET DevelopmentWorked in Real Estate (+10)Speaks English, Hindi51-200 membersVareweb
4.9(5 reviews)Web Design, Digital Marketing & Automation That Drives Growth
RecommendedVareweb is a Dallas-based web design, digital marketing and GoHighLevel automation agency helping businesses attract more leads, improve conversions and simplify follow-up. We design conversion-focused business websites, landing pages and eCommerce stores built for strong user experience, mobile performance and search visibility. Our digital marketing services include SEO, local SEO, Generative Engine Optimization (GEO), Answer Engine Optimization (AEO), content marketing, paid advertising, social media management and conversion tracking. We also build GoHighLevel CRM and automation systems for lead capture, pipeline management, appointment booking, email and SMS follow-up, missed-call responses, nurturing campaigns and review requests. By connecting websites, marketing and automation under one team, Vareweb helps businesses move from online visibility to qualified leads and consistent customer follow-up without relying on multiple disconnected providers.Looking for work in .NET DevelopmentLocated in Dallas, United StatesFrom €500 for .NET DevelopmentWorked in Hospitals & Healthcare (+7)Speaks English51-200 membersLionwood.software
5(8 reviews)Find the Perfect Solution
Lionwood.software specializes in crafting custom software solutions tailored to meet the unique needs of businesses across various industries. Our expertise spans software development, application creation, IT solutions, and consultancy services. We have extensive experience building WMS, ERP, TMS, and CRM platforms. Many projects focus on transforming legacy software into cloud-ready architectures that improve performance, usability, and maintainability. Our services include: - Software Product Development Services; - Product Design Services; - MVP Development Services; - Web App Development Services; - Mobile App Development Services; - AI Software Development Services.1 work in .NET DevelopmentLocated in New Castle County, United StatesFrom €5,000 for .NET DevelopmentWorked in Marketing & Advertising (+10)Speaks English, Ukrainian51-200 membersExtrovert Information Technology (EitBiz)
4.7(12 reviews)Empowering Businesses Through Cutting-Edge IT Solutions
Highly recommendedEitBiz is a digital transformation and product engineering company helping startups, SMBs, and enterprises turn innovative ideas into scalable digital products and business growth. Since 2017, we've successfully delivered 1,000+ projects for clients worldwide by combining technology expertise with a business-first approach. We partner closely with our clients to understand their goals, challenges, and long-term vision, delivering tailored solutions that improve operational efficiency, enhance customer experiences, and accelerate digital transformation. Our Services AI Development & Integration (Generative AI, AI Agents, Machine Learning, NLP & Computer Vision) Custom Software & Web Application Development Mobile App Development (iOS, Android, Flutter & React Native) SaaS & MVP Development Technology Consulting & Digital Transformation Business Process Automation Dedicated Development Teams & Staff Augmentation Why Choose EitBiz? 1,000+ Successful Projects Delivered End-to-End Product Development Expertise AI, Web, Mobile & Enterprise Technology Specialists Flexible Engagement Models & Dedicated Teams Focus on Measurable Business Outcomes Long-Term Technology Partnership Approach At EitBiz, we believe technology should solve real business challenges, not just build software. By combining strategy, design, engineering, and emerging technologies, we help organizations launch innovative products, modernize existing systems, automate processes, and create sustainable competitive advantages in an evolving digital landscape.Looking for work in .NET DevelopmentLocated in Fort Wayne, United StatesFrom €3,000 for .NET DevelopmentWorked in Others (+4)Speaks English51-200 membersLinnify
5(8 reviews)Simplifying life through innovation.
Top awardedLinnify is an awarded global technology partner , founded in 2016, with offices in Europe and the U.S. We empower visionary companies to accelerate digital product development . Faster, smarter, and more reliable than thought possible. From growing startups to established enterprises, we help turn bold ideas into scalable, user-centered digital solutions that drive measurable business impact. Our cross-functional teams deliver end-to-end capabilities in: - product strategy and validation - UX/UI design - custom software development (web and mobile) - AI and machine learning development - data engineering - cloud-native solutions - XR (AR/VR) applications - team augmentation Our validation-driven development approach ensures every product is aligned with actual market needs , minimizing risk while accelerating time-to-market. With a proven track record of building 80+ digital products across industries such as healthcare, logistics, education, automotive, and pharma , Linnify is present through strategic partnerships in major tech hubs like Austin, Berlin, and London. Our commitment to quality has earned us global recognition, including FT1000 ranking, Clutch Top 100, and ISO 27001 certification. Whether you’re seeking an AI development partner, looking to validate a product idea, or scaling your development capabilities, Linnify delivers with agility, transparency, and lasting impact through dedicated product teams. Let’s simplify life through innovation. Together.Looking for work in .NET DevelopmentLocated in Austin, United States (+1)From €5,000 for .NET DevelopmentWorked in Education (+9)Speaks English, Romanian11-50 membersRealweb
4.7(1 review)Leading AI Solution Provider Empowering Enterprise Expansion
Realweb Tech is a software consultancy that provides advanced AI, custom app, web, and IoT solutions to help midsize and enterprise businesses grow. Since 2018, our skilled and diverse team has focused on building scalable, secure, and future-ready technologies that improve operations and boost customer engagement, even in highly regulated and complex industries.Looking for work in .NET DevelopmentLocated in Columbia, United States (+1)From €1,000 for .NET DevelopmentWorked in Legal Services (+7)Speaks English11-50 membersApptech Systems
5(6 reviews)Your Enterprise’s Next Chapter Starts Here!
Top awardedFounded in 2017, Apptech has emerged as a reliable ally for organizations on their journey towards digital transformation. We specialize in crafting a suite of digital solutions that strategically leverage the transformative power of technology. Our core expertise encompasses bespoke software, innovative web and mobile applications, and robust enterprise solutions that guide our clients toward a prosperous digital future. We are proud partners with industry giants Microsoft and Amazon, utilizing their cutting-edge technologies to deliver exceptional results. Moreover, our operations extend from our headquarters in Türkiye to the United States and Saudi Arabia. Each office is equipped to serve regional clients with tailored expertise, making us a global player in the digital solutions arena. End-to-End Software Development Web & Mobile App Development AI & Machine Learning SaaS Development PoC/MVP Development App Modernization IT Consulting Quality Assurance Services Our mission is to help enterprises accelerate the adoption of new technologies, untangle complex issues that always emerge during digital evolution, and orchestrate ongoing innovation. Whether it is a consumer-oriented app or a transformative enterprise-class solution, the company leads the process from ideation and concept to delivery and provides ongoing support through its quality framework.Looking for work in .NET DevelopmentLocated in Lodi, United States (+3)From €5,000 for .NET DevelopmentWorked in Household Products (+12)Speaks English, Arabic11-50 members