Top Web App Development Agencies in Brussels

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Top Featured Web App Development Agencies

Underside
4.6
(26 reviews)
Let's make the world better, thanks to technology.
Underside has been a digital agency active for over 25 years in the digital transformation of companies. We support companies in their projects from the creation of the idea, then through the phases of development, deployment, and maintenance of solutions. We develop mobile applications, websites, e-commerces, management software, and are particularly fond of augmented and virtual reality, chatbots, and artificial intelligence in general. Support for digital transformation (Design Thinking) • Application development • Graphic creations • Maintenance of Apple IT parks • Cybersecurity.
10 works in Web Application
Located in Charleroi, Belgium
From €5,000 for Web Application
Worked in Restaurants (+21)
Speaks French, English
11-50 members
Born Digital
4.8
(24 reviews)
Born Digital creates beautiful brands and outstanding digital products.
Top awarded
Born Digital creates beautiful brands and outstanding digital products like websites, mobile apps and complex tools and platforms. We help organizations unlock their full potential with bold identities and state-of the art digital products and we thrive when we're faced with complex and creative challenges. Direct interaction We believe in self-steering teams and direct interaction between our team and our customers and we don’t believe in overhead profiles. Information needs to flow directly between you and the people who design and build your project. Problem first, solution second By which we mean we always start with focussing on the needs of both our clients and their customers. We analyse and design the best possible experience first, then pick the best technology stack to turn this design into a performant, flexible and immersive digital experience. Proven methods We never pitch a solution, always an approach. We can take all the insights and experience from previous projects, but that also taught us that every client and every project is different and there’s often something seemingly small that might have a huge impact on the result. We alway rely on a proven methodology that got every single one of our clients to a great result within budget and time.
14 works in Web Application
Located in Hasselt, Belgium
From €15,000 for Web Application
Worked in Government & Administration (+27)
Speaks Dutch, English
11-50 members
Innovative Solutions
4.9
(14 reviews)
Nos solutions numériques sont adapté à vos besoins.
Innovative Solutions is a Custom Software Development company located in Brussels. It has the advantage of offering a good quality-price ratio and a permanent accompaniment during the whole programming process of your project . The development starts immediately after signing the contract and respects the deadlines. Innovative Solutions creates applications that reflect your corporate image and ensure a unique User Experience . It also accompanies you in the digital transition of your structure to help you better evolve in our increasingly digital environment. Our expertise: - Development of Mobile and Web Applications (IOS, Android, hybrid, ERP, CRM) - Accompanying the company in a digital transition with the construction of a team - Consulting and IT audit for an optimization of the Customer Experience , analysis of existing solutions, and integration of adapted solutions. Our quotations are complete and include examples of mockups to give you a visual idea and a timetable for the project. Do you have a digital project in mind? Don't hesitate to ask for a quote.
30 works in Web Application
Located in Brussels, Belgium
From €15,000 for Web Application
Worked in Sports (+22)
Speaks French, English
11-50 members
Novity
5
(12 reviews)
Tech, Data, AI & Product Partner | 80+ Clients
Novity is the Tech, Data and AI partner for CTPOs. We accelerate your roadmaps by turning technological challenges into practical solutions. With hubs in Mauritius and Madagascar, supported by our European office in Paris, we combine tech strategy, data architecture and continuous delivery through a hybrid operating model. Since 2019, our team extension model has supported software publishers, startups and digital factories within small and mid-sized businesses and mid-market companies. More than 80 organisations trust us, including Kolsquare, CapCar, iQera and Adeiz. At Novity, AI must deliver tangible business value. We design use cases that connect with your existing systems, tools and databases, going beyond short-lived experiments. As a Certified member of the Claude Partner Network, we demonstrate our ability to deliver robust, well-documented AI solutions, backed by a team of Claude Certified Architect – Foundations experts. Our engineers work directly alongside your teams, sharing knowledge and challenging architectural decisions to maximise product impact. From initial scoping to production deployment and industrialisation, we operate with full transparency. More than 15 AI projects have already been deployed. Our areas of expertise: 🎯 Consulting & Tech Strategy: Architecture, audits, technical scoping and roadmaps 🚀 Product & Design: Product discovery, backlogs and UX/UI journeys 💻Software Engineering: Cloud-native development, SaaS and quality assurance 🤖 Data & AI: Data platforms, autonomous agents, RAG and LLM integration Our approach: integrated teams. Meet and assess your future team members before onboarding. They integrate seamlessly into your workflows, aligning with your technical and business goals. Our commitments: → 9.5/10 client satisfaction score → Over 97% monthly engagement renewal rate → Anthropic Claude Partner Network certified partner since 2026 → Member of France FinTech, La Retail Tech and French Tech Mauritius
3 works in Web Application
Located in Paris, France (+2)
From €5,000 for Web Application
Worked in Marketing & Advertising (+3)
Speaks English, French
51-200 members
Gaspa Agency
4.9
(19 reviews)
Web, mobile & AI agency | Custom applications, SaaS & business software | +150 clients
Highly recommended
Top awarded
Gaspa Agency is a digital agency based in Brussels. We design, develop, and evolve custom digital products, from the initial concept to their production. Our core business: • Web and mobile applications • SaaS platforms and marketplaces • CRM, ERP, and business software • Custom websites and e-commerce • Artificial intelligence integrated into business processes • Branding, product design, and UX/UI Our difference: we start neither from a technology nor from a fixed specification. We first analyze the business challenges, uses, constraints, and objectives to define what really needs to be built. Our method combines Discovery and Delivery: • Understand the need and identify priorities • Design a clear, coherent, and testable experience • Develop a reliable and scalable architecture • Test, deploy, and measure results • Evolve the product based on actual usage Product strategy, UX/UI design, branding, development, artificial intelligence, QA, and management are brought together within the same team. This organization helps secure decisions, limit technical risks, and accelerate deployment without sacrificing quality. Gaspa Agency supports ambitious SMEs, scale-ups, mid-sized companies, and large corporations in Belgium and internationally. Companies looking for a team capable of understanding their challenges, carrying a product vision, and transforming it into a digital experience worthy of their ambitions. Do you have a digital product to launch, modernize, or take over? 👉Let's discuss what your company really needs to build!
8 works in Web Application
Located in Brussels, Belgium
From €10,000 for Web Application
Worked in Luxury Goods & Jewelry (+22)
Speaks English, French
1-10 members
iterates
4.9
(6 reviews)
Gain efficiency and growth by outsourcing the development of your IT needs.
Recommended
We are convinced that only together can we achieve great results. Collaboration is the key element of our company. Here, you can exchange ideas with other team members who share the same passions. At iterates , you will find a group of people who will challenge and support you, as the main goal is to inspire each other every day! We take care of everything: We know that your time and productivity are precious. That's why we offer a complete 360° IT service. From software development to functional testing to ensure smooth operation, including project management and application deployment, we take care of everything. Trust us to provide you with the best technical solutions that fit your needs and budget, so you can focus on what matters most to your business. Honest and personalized solutions: Discover a human-sized agency that makes a difference. At iterates , our founders know how to initiate new projects to advance a business while respecting an established budget. We put our expertise and pursuit of excellence at the service of your success and that of your project. By using our services, you ensure that you receive honest, flexible, and tailor-made services that meet your needs. We are a Belgian company founded in 2020 by Benoit and Rodolphe : Benoit , our CTO. He oversees every technical project. He applies his experience and knowledge of new technologies in everything he does! Rodolphe , he is the definition of a serial entrepreneur. Always developing new digital projects, he will help you choose the right solutions for your business.
26 works in Web Application
Located in Etterbeek, Belgium
From €3,000 for Web Application
Worked in Software & Computer Services (+20)
Speaks English, Arabic(+2)
11-50 members

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