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Leobit is a full-cycle . NET, AI, and web application development provider for technology companies and startups primarily located in the US, EU, and the UK. We have representative offices in Austin, TX (USA), Tallinn (Estonia), Kraków (Poland), London (UK) and the development center in Lviv (Ukraine) with 170+ talented software engineers, architects, QA experts, and UI/UX designers. Our Achievements:Microsoft Solutions Partner - Digital & App InnovationISO 9001:2015 and ISO 27001:2022 CertifiedISTQB Gold PartnerTop . NET Developers in 2025 by ClutchCustomer Service Department of the Year in 2025 by Stevie® AwardsLeobit has successfully delivered over 150 well-designed and well-factored web & mobile applications to technology companies ranging from Fortune 500 firms to Silicon Valley startups. Our Services:. NET software developmentAI/LLM software developmentCustom software developmentDedicated development teamWeb app developmentMobile app developmentCloud developmentSoftware architecture designUI/UX designBusiness analysisQuality assuranceApp support & maintenanceTechnology consultingOur Key Technologies:Microsoft Stack: . NET, ASP. NET, C#, Azure, WCF, Entity Framework, MaUI, BlazorWeb/Frontend: React, Angular, Vue, jQuery, TypeScriptBackend: . NET Core/C#, Ruby, Node, PHP, PythonMobile Technology Stack: iOS, Android, Flutter, Swift, KotlinAI integration

You’ve got the strategy. We turn it into working solutions. For 20+ years, Sigma Software has worked with Fortune 500 companies, global vendors and technology start-ups. Our mission is to help innovation leaders move critical initiatives forward by aligning teams, systems, and priorities. With 1,800 engineers in AI, data, cloud, embedded, and cybersecurity, we deliver solutions that scale and last, with ISO-certified quality, security, and compliance embedded from day one. Strategic Initiatives we support:AI Adoption – use AI where it brings tangible value, starting from first pilots and scaling to wider use. Digital Product Innovation – create new software or add digital layers to existing products and services, built with security and compliance in mind. Experience Design – shape journeys across apps and portals so users reach the right outcomes with less friction. Regulatory Compliance – navigating the regulatory landscape complexity and translating standards into working processes for audit-ready operations. Operational Efficiency – replace slow or manual work with modern, automated solutions that cut cost and effort. Managed Services – ensure stability, security, and uptime without draining internal teams. Our work goes beyond solution delivery. Sigma Software Labs works with startups to shape and test new ideas. Sigma Software University not only grows future engineers but also helps our clients build internal capabilities through tailored literacy programs and training. Our R&D teams experiment with emerging technologies early, so when they become relevant, our clients can adopt them faster and with less risk. Together, this cycle of delivery, learning, and exploration makes us better partners and strengthens the outcomes we deliver.

DevIT Group is a Ukrainian company with over 11 years of expertise in the web industry, specializing in e-commerce solutions. E-commerce is our core focus, and we pride ourselves on knowing the industry inside out. Whether it’s custom app development, advanced integrations, or creating seamless online experiences, we have the skills and experience to bring your vision to life. 🏆 Shopify Partner since 2015💻 150+ passionate experts 💪 🔧  9 own Shopify Apps🌎 Over 550 successful projects for clients worldwide. With a global client base and a proven track record, we’re ready to take on your project and help your business thrive. 💬 Curious or have a project in mind? Drop a message.

CodeGeeks Solutions is a software development company led by top-notch experts with over 15 years of experience in the industry. We are passionate about delivering innovative solutions, combining technical excellence with a deep understanding of our clients’ industries. From startups to enterprises, we’ve helped numerous businesses automate workflows, optimize processes, and enhance user experiences. With expertise in AI and SaaS development, we help companies streamline operations, boost efficiency, and drive growth. Our services include mobile and web app design, custom software and AI development. At CodeGeeks, transparency, collaboration, and a customer-centric approach drive every project.  

At ConceptArea, we are dedicated to providing innovative solutions and cutting-edge technologies to meet the evolving needs of our clients. With a focus on creativity, collaboration, and excellence, we strive to deliver tailored solutions that drive business growth and success. Our team of skilled professionals combines expertise in IT Consulting, IoT, Mobile App Development, and Web Development to deliver comprehensive solutions that exceed expectations. ConceptArea is your trusted partner for turning ideas into reality.

At CodeSeek, we create custom web solutions designed to elevate your business 🌐. Fueled by passion and innovation, we’re constantly exploring new industries and technologies to deliver impactful results 💻. Let’s bring your vision to life together! ✨

JEVERA (previously called JBS) is a Ukrainian software development company established back in 2010. We focus on custom software development and legacy migration, helping our clients to compete and launch digital services and tech products faster. Our main domains of expertise are Telecommunications, Retail, and Healthcare. Back in 2015, our tech team developed a low-code platform that we actively use in commercial projects to accelerate software development.

AXLES is a software development company based in Lviv. We build products from scratch and maintain existing systems in health, sports, video/image processing and social media domains. AXLES cares about clients' success. We focus on our team expertise development in mobile, web development and QA to bring the best value to people that we work with.

“Vchasno” offers digital solutions for simple and transparent business management, including electronic document management, HR process automation, issuance of electronic receipts, creation of secure digital signatures, contract exchange with partners, processing of waybills, and submission of reports for private entrepreneurs. All services are provided online — quickly, conveniently, and with full legal security.  Vchasno’s digital services are part of the Ukrainian product IT company group — Vchasno Group. Vchasno offers the following range of services: Vchasno. EDO — a convenient service for managing all your documents in one place: create, sign, exchange, and store them online. Vchasno. Kadry — an HR electronic document management service. Vchasno. Kasa — a software-based cash register (PRRO) for issuing receipts and fiscalizing payments. Vchasno. KEP — a secure digital signature service. Vchasno. Zvit — a unified platform for small and medium-sized businesses, enabling you to prepare and submit reports, sign documents, and manage bank accounts from a single dashboard. Vchasno. EDI — a solution built on international standards to automate and optimize electronic document flow. Its main goal is to digitize all document-related processes across industries — from retail and logistics to banking. Vchasno. TTN — a reliable tool trusted by thousands of carriers and suppliers. It simplifies goods tracking and digitizes the exchange of waybills.

IT makes sense. Web / Mobile / Desktop apps AI / Machine Learning IoT

UGLA ERP is a next-generation B2B SaaS platform built in Ukraine, designed to automate and scale operations for manufacturing, logistics, retail, and more. Unlike legacy systems, UGLA is modular, fast to deploy, and tailored for emerging markets — offering global-level functionality at a fraction of the cost. We’re now expanding into IoT and MilTech, with international growth in focus.