Finding the best custom software development company can be overwhelming. With so many software firms and agencies worldwide, who does the best work? Whether you’re a startup founder or Product Owner, you need a Tech Partner that can deliver high-quality, cost-effective solutions while understanding your industry challenges.
To make your search easier, we’ve prepared a list of the 10 top custom software development companies that combine a strong track record, industry expertise, and long-term reliability.
Check out our previous article about Top 10 healthcare software development companies
❓ How to Choose the Right Custom Software Development Partner?
When preparing your list of custom software development companies to reach out to, you should pay attention to these factors to ensure they meet your needs.
- Technical Expertise & Services. Look for companies with expertise in the technologies you require (e.g., cross-platform app development services, cloud solutions, machine learning, etc.). A top firm should offer full-cycle development services, including the discovery phase, product design, UX/UI design, and quality assurance, to deliver complete software solutions.
- Industry Experience. Domain knowledge can be a major advantage. Check if the company has industry expertise in your sector (fitness, IoT & Connectivity, eMobility, etc.). Firms with experience in similar projects understand regulatory requirements and best practices for your industry.
- Portfolio and Track Record. Review their case studies and projects to check their quality and innovation. A strong track record (years of experience and successful projects) indicates reliability. The top custom software companies will showcase long-term client engagements and high-quality outcomes that solve real business problems.
- Client Reviews & Reputation. Search for client testimonials or independent reviews (on platforms like Clutch) to see if they are top-rated for communication, project management, and results. Consistently positive feedback and ratings signal that the company delivers on its promises.
- Project Management & Communication. Effective collaboration is key to a successful project. Ensure the company follows project management practices like Agile or Scrum, and offers proactive, responsive communication. Overlapping time zones or a presence in your region can simplify real-time collaboration for long-term projects.
- Post-Launch Support. Custom software requires ongoing maintenance that includes post-launch support, updates, and scalability planning. A reliable Tech partner will offer long-term support to ensure your software stays secure, up-to-date, and continues to meet user needs.
🏆 10 Top Custom Software Development Companies
Keeping these factors in mind, let’s explore the top 10 custom software development companies (in no particular order) that stand out worldwide in 2025. Each of these agencies has a proven record of delivering high-quality custom applications and technology services.
# 1: Stormotion
Founded: 2017
Headquarters: Dnipro, Ukraine
Stormotion is a leading custom software development company that helps startups and SMEs turn bold product ideas into market-ready solutions. The company specializes in building custom web and mobile applications with modern technologies like React Native, TypeScript, Node, ReactJS & AI/ML integration. Known for flexibility, the agency adapts to client needs, offering both dedicated teams and staff augmentation.
Recognized by the Manifest as the top 100 mobile app developers in Eastern Europe in 2025, Stormotion delivers products that combine intuitive UX, robust engineering, and long-term scalability.
By offering full-cycle development services (product discovery, tech stack selection, UX design, Agile development, Quality Assurance, and post-launch support), Stormotion has become a trusted Tech partner for companies looking for a cost-effective but high-quality path to growth.
Stormotion rebuilt the e-scooter companion app for Egret, improving OTA updates and BLE connection for various scooter models (image by Stormotion)
Expertise & Solutions
Stormotion’s expertise spans:
- EV & eMobility Software. EV charging app development for CPOs and eMSPs with real-time maps, OCPI/OICP integrations, payments, and loyalty features. They also customize SDKs and white-label apps for companies that want to boost brand recognition.
- IoT & BLE Companion Apps. Seamless hardware-to-app experiences for marine batteries, scooters, fitness machines, and wearables.
- Fitness, Wellness & Healthcare Software. Stormotion specializes in corporate wellness development, workout streaming apps, and connected rehabilitation tools.
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Notable Projects
Over 8 years of experience, Stormotion delivered 55+ projects across industries. Let’s take a look at some of them:
Caspar Health – A German white-label physical rehabilitation provider. Stormotion rebuilt the patient-facing mobile app with modern UI, rehabilitation progress tracking, and secure TalkJS chat features. Today, it supports 500,000+ patients and has a 4.7-star Play Store rating.
STEPR – A fitness hardware brand from the US. Stormotion developed an Android console app for its stair-climbing machine, integrating live workout tracking, Bluetooth sync, and entertainment platforms like Netflix. The product successfully launched and resulted in a 4.6 rating on STEPR’s website, plus strong market reception.
Norsk Guardian – A marine battery brand from the US. Stormotion built a BLE-enabled app to monitor lithium-ion batteries in real time, enhancing boating safety and user trust. The solution enabled Norsk to scale its product offering and attract more customers. The solution now satisfies 95% of Norsk clients and provides live telemetry for multiple batteries.
You can find out a firsthand impression about working with top custom software developers at Stormotion from Jacob Hals, Director of Product Technology at Norsk Gardian.
Egret – A German e-scooter brand. Stormotion rebuilt a companion app with improved OTA firmware updates, scooter status monitoring, and BLE support for different scooter models. This app helped Egret enhance the rider experience and ensure reliable fleet maintenance. The app solved major update issues and today holds a 4.5-star Play Store rating, boosting customer retention and scooter sales.
Stormotion created an Android kiosk app for payment terminals at Milence’s charging stations for heavy-duty transport (image by Stormotion)
Milence – A Netherlands eMobility joint venture (Daimler, Volvo, Traton). Stormotion developed an embedded Android kiosk app for payment terminals that powers Europe’s heavy-duty EV charging stations, ensuring real-time charging status and smooth integration into Milence’s charging infrastructure. The app passed strict security audits and supports Milence’s roadmap to 1,700+ charging points across Europe.
In summary, Stormotion combines technical excellence and strong industry expertise with the best custom software development services, making it a trusted partner for companies that want to turn ambitious product ideas into high-quality digital solutions.
# 2: STX Next
Founded: 2005
Headquarters: Poznań, Poland
STX Next is one of the largest custom software companies in Europe, best known for its specialization in Python engineering. The firm provides web and mobile app development, AI/ML, cloud solutions, and DevOps, making it the best custom application developing company for enterprises.
Notable clients include Mastercard, Canon, Decathlon, and Linde, covering industries from fintech and logistics to healthcare and retail. Their blend of technical depth and scale allows them to support global enterprises with complex digital solutions.
# 3: TXI
Founded: 2002
Headquarters: Chicago, USA
TXI, formerly Table XI, is a digital product consulting firm that combines user-centered design and custom software development. Their expertise includes building web applications and mobile platforms with a focus on product discovery and UX.
They have worked with organizations like the American Medical Association (digital health solutions), AccuWeather (consumer app enhancements), and ISACA (data-driven platforms). This portfolio highlights their ability to deliver applications across healthcare, media, and education, making them one of the best custom software developers in the US.
Stormotion added digital rehabilitation tracking functionality to the Caspar Health app (image by Stormotion)
# 4: 10Clouds
Founded: 2009
Headquarters: Warsaw, Poland
10Clouds is a full-service custom software development company offering web, mobile, blockchain, and AI-driven solutions. Their team leverages technologies like React.js, Python, and Flutter to deliver modern digital products. Known for versatility, they support SMEs and enterprises with UX design, development, and cloud deployment.
This top custom software development company has built products for Pinterest, Baidu, and Orange, as well as healthcare and fintech innovators. Projects like GlucoseMama (gestational diabetes digital healthcare app development) and Trust Stamp (a biometric security platform) illustrate their cross-industry impact and long-term reliability.
# 5: Future Processing
Founded: 2000
Headquarters: Gliwice, Poland
Future Processing is a technology consultancy and custom software agency. Their services span software engineering, AI/ML, data analytics, cybersecurity, cloud modernization, and IT consulting.
Notable projects include a smart water management platform that reduced resource consumption for a utility company and an AI-driven insurance optimization system for a UK client. With a track record across finance, healthcare, media, and utilities, Future Processing is recognized as one of the best custom software companies for enterprises.
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# 6: DICEUS
Founded: 2011
Headquarters: Hellerup, Denmark (with delivery centers in Ukraine)
DICEUS is a custom software development firm specializing in insurance, fintech, and banking solutions. They provide both off-the-shelf insurance products and fully custom applications, covering areas like claims automation, policy management, and core banking modernization.
Key clients include UNIQA, Vienna Insurance Group, Fairfax Financial, and Raiffeisen Bank. With over a decade of experience in financial software, this top custom software developer stands out as a leading custom application development company for insurers and banks.
# 7: Taazaa
Founded: 2007
Headquarters: Hudson, Ohio, USA (with dev center in India)
Taazaa is a custom software company that builds enterprise-grade platforms, SaaS products, and mobile apps. Their services cover full-cycle development, UX design, QA automation, and DevOps, with expertise across healthcare, manufacturing, real estate, and logistics.
Notable projects include a medication monitoring platform and telemedicine app development for healthcare providers, as well as modernization projects for manufacturers and SaaS businesses. With its approach and diverse portfolio, Taazaa is one of the best custom software development companies for enterprises.
Stormotion developed the marine battery management application with BLE connectivity (image by Stormotion)
# 8: Miquido
Founded: 2011
Headquarters: Kraków, Poland
Miquido is a custom software development agency with strong expertise in mobile apps, AI/ML, and product design. They specialize in delivering web and mobile solutions across fintech, e-commerce, healthcare, and entertainment. Miquido supports clients from product discovery to MVP launch and scale.
Their client list includes Abbey Road Studios, HelloFresh, Nestlé, Skyscanner, and BNP Paribas.
# 9: The Software House
Founded: 2012
Headquarters: Gliwice, Poland
The Software House (TSH) is a product-focused software company helping startups deliver projects faster. Their services include custom web platforms, React/Node.js development, cloud DevOps, and team augmentation.
Projects include StageClip (cloud optimization with major cost savings), Travelia (travel app), and an AI-based translation pipeline for publishing. With a reputation for solving delivery bottlenecks and accelerating product launches, TSH deserved to be in our list as the best custom application development company.
📌 Read also our dedicated article on how to estimate software development time.
#10: N-iX
Founded: 2002
Headquarters: Valletta, Malta (with major hubs in Ukraine & EU)
N-iX is a global IT outsourcing and software development company with over two decades of experience. Their services span custom software development, enterprise solutions, AI, IoT, cloud, and product engineering, making them one of the largest custom software providers in the world.
They have partnered with various companies, including Fortune 500 enterprises in fintech, telecom, retail, and manufacturing. With its ability to quickly scale engineering teams and deliver high-quality solutions worldwide, N-iX is trusted by enterprises across industries.
💡 Takeaways
Now, you have the list of the 10 top custom software development companies, but finding the right one depends on your goals and scale.
- For small businesses and startups, Stormotion, TXI, or Miquido can be the right choice if you need a product-focused and thinking-out-of-the-box approach.
- Enterprises looking for large-scale delivery may turn to STX Next, Future Processing, The Software House, or N-iX.
- Industry-focused firms like 10Clouds (fintech), DICEUS (insurance), and Taazaa (education) bring domain-specific expertise.
Ultimately, you should choose a custom software development company that combines technical excellence, industry knowledge, and a track record of delivering reliable solutions.
Looking for a dedicated custom software development company?
Stormotion helps startups and SMEs build digital products – from MVPs to feature-rich apps for fitness machines, EV kiosks, connected health platforms, and BLE-based devices.
![Stormotion client Pietro Saccomani, Founder from [object Object]](/static/40e913b6c17071a400d1a1c693a17319/1b3aa/pietro.webp)
