Factories can forecast equipment failures before they even happen, while connected cars communicate with traffic lights to help ease congestion. Furthermore, hospitals are now able to track patients remotely using tiny sensors. Before, this would have sounded like a futuristic concept. But these days, Internet of Things (IoT) technology can connect multiple devices worldwide, making all of this possible.
Yet, creating effective IoT solutions requires skills that some companies may not have in-house. If this is the case for you, you need developers who understand how hardware fits together, how to set up cloud systems, how to keep data safe, and how to analyze information in real-time, all at once. That’s why we’ve put together a list of the top IoT development companies in 2025.
Best IoT Development Companies in 2025
Edvantis is an outsourcing company that sees itself as beyond a vendor—they aim to become an extension of your team. With nearly two decades of experience under their belt, Edvantis has built a solid reputation through strong partnerships and now offers some of the best IoT app development services.
Their team works with over 40 active clients and has completed more than 400 projects across different industries. About 72% of their professionals are mid- or senior-level specialists who bring expertise in fields like manufacturing, transportation, healthtech, and IoT.
- Services and expertise: software engineering, data science and BI, artificial intelligence, cloud migration, legacy modernization, AI adoption, IT operations
- Tech stack: C#, C++, Python, Java, Ruby, Go, JavaScript, TypeScript, PHP, Node.js, Spring, .NET
- Team size: 400+ experts
- Location: Rzeszów, Poland
Portfolio: Engineering support for a leader in threat detection and security screening technologies, control software development for the renewable energy sector, software development for asset management and life safety solutions, and others
Yalantis is one of the top IoT development companies in 2025. They currently manage ongoing projects for more than 35 clients, which proves they focus on building long-term relationships. Interestingly, 30% of their new business comes from partner referrals.
Yalantis also brings over 15 years of experience in software development to IoT projects. Their team handles everything from the initial idea to the final setup. They take care of integrating new systems with existing software platforms and develop advanced analytics that help turn device data into meaningful business insights.
- Services and expertise: custom software development, development teams, staff augmentation, IT consulting, digital transformation
- Tech stack: Rust, C, C++, Kotlin, Bootloader, Linux Kernel, AWS IoT, Arduino, ESP32, STM32, NRF52, Zephyr, LoRaWAN, MQTT
- Team size: 500+ experts
- Location: Warsaw, Poland; Lviv, Dnipro, Kyiv, Ukraine; Larnaca, Cyprus; Tallinn, Estonia
- Portfolio: Redeveloping an EV charging solution for a European EV charging network, IoT network management platform, smart data management & energy optimization for a Fortune 500 company, and others
Brash Inc. is one of the best IoT development companies in 2025. They see success through both the number of patents they secure and the projects they complete. They cooperate as true partners, collaborating closely rather than just taking orders.
With over ten years of experience, Brash has worked with different clients, from solo entrepreneurs to large corporations, and they’ve been awarded more than 36 industry awards. Brash Inc. also secured over 41 patents, which confirms their innovative approach.
- Services and expertise: design, engineering, software, manufacturing
- Tech stack: Node.js, React Native, Ruby on Rails, SDL, Vue.js, React, AJAX, Apex, C, C++, Ember.js, Java
- Team size: up to 49 experts
- Location: San Diego, US; Ottawa, Canada
- Portfolio: Veba, Domono, Intrex, and others
Relevant Software has been creating products for more than 11 years. During this time, they’ve launched over 200 apps across 15 countries.
Their team is made up of mostly senior and experienced engineers, over 90%, which helps them deliver accurate project estimates that are about 89% precise. And this is what lets them deliver the best IoT app development services. When it comes to IoT, they offer three main services: IoT consulting, IoT software development to build the actual systems, and prototyping and design services.
- Services and expertise: IT outsourcing, AI development services, IoT development, IoMT development, product development, product discovery, dedicated team, web development, mobile development, SaaS development, quality assurance, UI/UX design, cybersecurity, DevOps, AI chatbot development
- Tech stack: Java, Python, React.js, Angular, Vue.js, Node.js, JavaScript, Flutter
- Team size: 80+ experts
- Location: Lviv, Ukraine; Warsaw, Poland; Valencia, Spain
- Portfolio: Remote monitoring system development for a Fortune 500 company, building and designing a platform for remote sensor management, visualizing air quality sensor data in a web dashboard, and others
Internetum is a company that specializes in creating IoT solutions. They focus on helping businesses develop their own platforms instead of relying on third-party ones.
Since starting back in 2015, the company has gained nearly a decade of hands-on experience in IoT development. Their team of over 25 experts works mainly on IoT projects and software development. Internetum serves clients in industries like manufacturing, logistics, and insurance.
- Services and expertise: prototyping, product design, custom software development, web application development, mobile app development, maintenance
- Tech stack: .NET, Angular, React Native, React, C#, ASP.NET, SQL, C, C++, JavaScript
- Team size: Up to 49 experts
- Location: London, UK
- Portfolio: Video telematics for safe transportation of sensitive substances, enhancing insurance fraud detection with IoT and AI, upgrading the standard of flat rentals with voice-enabled home automation, and others
Redcat Ltd is a development company that has helped clients raise over $40 million just from MVPs they built in 2021. Founded in 2017, they operate from four development centers located across Ukraine and the Czech Republic.
Since starting out, the company has completed more than 50 projects. They offer a full range of IoT services, from planning the technical architecture to creating apps that visualize device data and turn it into useful insights. Redcat Ltd also develops remote control apps so users can manage their connected devices from anywhere.
- Services and expertise: custom software development, web development, front-end and admin dashboards, back-end and admin infrastructure, legacy software modernization, blockchain development, IoT development, AI integration
- Tech stack: Kotlin, Swift, React, Node.js, Docker, GraphQL, Postman, Swagger, Jenkins, Xcode, Chaslytics, TestFlight
- Team size: 20+ experts
- Location: Kharkiv, Ivano-Frankivsk, Ukraine
- Portfolio: Discounted food radar app
Porticos, Inc. is a product development company that has been solving complex problems since 2003. Over the past 20 years, they’ve built an impressive record: over 200 patents, more than 200 clients, and over 500 projects delivered.
What particularly stands out is how long many of their client relationships last, as some go back almost 20 years. Porticos, Inc. has experience developing IoT devices like handheld electronics, wearable tech, medical devices, and more.
- Services and expertise: New product development, engineering investigation, production
- Team size: 30+ experts
- Location: Morrisville, US
- Portfolio: Wearable EKG, Intellisocket, Sweat ID, and others
Think Tree Studios is a company that develops IoT solutions, especially focusing on Bluetooth technology. They handle a wide range of projects, from integrating voice assistants like Alexa to creating security systems using RFID and NFC.
Their main strength lies in Bluetooth integration; they’ve worked with over 30 different Bluetooth devices, sensors, and modules. This includes temperature sensors, oxygen sensors, and blood pressure monitors, as well as smartwatches, accelerometers, gyroscopes, and altimeters.
- Services and expertise: Mobile development, web development, UI/UX design, Bluetooth, Internet of Things
- Tech stack: React Native, JavaScript
- Team size: Up to 49 experts
- Location: Englewood, US
- Portfolio: healthio, WiCis Sports, LuminAID, and others
Devision is a software company established in 2007. Their name blends “development” and “vision,” which sums up what they do.
They mainly work in three areas: FinTech, energy, and IoT. The company offers a variety of services that most companies look for, like custom software development, team augmentation, and IoT solutions.
- Services and expertise: Inovation advisory, team augmentation, custom software development, advanced technologies
- Tech stack: Angular, React, Java, PHP, .NET, Node.js
- Team size: Up to 249 experts
- Location: Sofia, Bulgaria
- Portfolio: IoT software development for a leading electrical tech company
Indeema Software Inc. is the best IoT development agency in 2025. They specialize in both hardware and software engineering and have over 10 years of experience in developing IoT solutions. They’ve worked with a variety of companies, from large Fortune 200 corporations and mid-sized firms to startups.
Indeema Software Inc. understands that connecting devices to the internet can open the door to security risks. That’s why they focus on building their IoT development services with a strong emphasis on protecting the devices and solutions right from the start.
- Services and expertise: IoT development, R&D services, firmware development, MVP development, UI/UX design, DevOps services, cloud software development, dedicated team, mobile app development, iOS app development, Android app development, IoT application development services, cross-platform app development, web development, front end development, back end development, database modeling, consulting
- Tech stack: .NET, Node.js, React, Angular, Flutter, Next.js
- Team size: 100+ experts
- Location: Wilmington, US; Wrocław, Poland; Lviv, Ukraine
- Portfolio: Drone spraying solution, custom smart home system, smart agriculture app, and others
Conclusion
The top IoT app development companies we’ve covered represent different approaches to IoT development. Some excel at hardware integration. Others focus on software platforms or security-first solutions. But what they all share is a proven track record, deep technical expertise, and the ability to handle the tricky challenges that come with IoT projects. Your best choice depends on what you need most from your IoT solution.
If you want to feature your IoT development firm on this list, email us or submit a form in the Top Choices section. After a thorough assessment, we’ll decide whether it’s a valuable addition.
