Web applications SaaS platforms API integrations

Custom web app development that fits your business

A custom web application that streamlines your processes, connects your systems and scales with your organisation, built by a team that understands both technology and the business.

1.2k gebruikers 99.8% uptime 24ms latency

What is a web application, and when do you need one?

Software that runs in the browser

A web application is software you use through your browser, with nothing to install. Think dashboards, client portals, planning tools or complete business systems. All data sits centrally on a server, so every user, whether in the office or on the move, always works with the same up-to-date version.

How does it differ from a regular website? A website is informational, whereas a web app is interactive. Users log in, enter data, generate reports and manage processes. Read more in our knowledge base on web applications.

Why custom?

Standard SaaS tools cover common processes, but they also require you to adapt your way of working to the software. With a custom web application it works the other way round: the software is shaped around your processes.

Custom software is particularly valuable when you have unique business processes, want to connect several systems into one workspace, or must meet specific security or compliance requirements. See also our custom software development and mobile app development services.

50+
Web applications built
99.9%
Average uptime
8+
Years of experience
4.9
Average rating

Benefits of a custom web app

Why do organisations choose a custom web application over a standard solution?

Perfect fit

The software adapts to your way of working, not the other way round. This increases adoption within your team and considerably reduces friction in day-to-day workflows.

Seamless integration

Connect your web app with CRM, ERP, accounting software or external APIs. One workspace instead of switching between separate tools. See our API integration services.

Scalable from day one

A custom web app grows with your organisation. More users, new modules or higher load? The architecture is built to handle it.

Competitive advantage

A web app that does exactly what you need, and what your competitors don't have, gives you a direct advantage: you can respond to market opportunities faster.

Full ownership

With custom development you own the code and the data. No vendor lock-in and no mandatory per-user licence fees. You set the pace yourself.

Better user experience

The interface matches precisely what your users need, without superfluous menus. Higher productivity and less training time.

When should you choose a custom web app?

Custom development isn't always necessary. But in the situations below, a custom web application demonstrably delivers more value than a standard solution.

Processes

Unique business processes

Your way of working is specific to your industry, and no off-the-shelf package fits well. Think of specialised planning tools, registration systems or operational dashboards that do exactly what your team needs.

Integration

System integration

You want to connect several separate systems into one cohesive workspace. A custom web app acts as the connecting layer between your CRM, ERP, warehouse system or external services.

Growth

Scalability and growth

Your organisation is growing and you need a platform that scales with it, in users, data and functionality, without having to rebuild after two years.

Portals

Customer portals and SaaS

You want to build a customer portal, partner platform or SaaS product that you can offer as a service. Custom development gives you full control over functionality and branding. See also our customer portal service.

Technologies we use

We are technology-agnostic: we choose the stack that best suits your project. A selection of the tools we work with.

Frontend

Fast, responsive interfaces that work well on every device.

React Vue.js Next.js Astro TypeScript Tailwind CSS

Backend

Robust APIs and services that power your business logic.

Node.js Python Go Django FastAPI Express

Cloud and infrastructure

Scalable hosting with high availability and automated deployments.

AWS Azure Google Cloud Docker Kubernetes Terraform

Databases

From relational to document-based, always the right choice for your data.

PostgreSQL MongoDB Redis Elasticsearch Supabase

Integrations

Seamless integrations with your existing systems and external services.

REST API GraphQL Webhooks OAuth 2.0 gRPC

Why choose Appfront as your web app partner?

Building a web app is an intensive process. You are looking for a partner who not only masters the technology, but also understands what your business needs.

Multidisciplinary team

Developers, UX designers and cloud engineers work together on your project. From concept to deployment, all the expertise under one roof. Where relevant, we integrate AI functionality that adds genuine value.

Transparent collaboration

No black-box development. We work in short sprints with regular demos. You see exactly what is being built and can steer the direction when needed. Open communication about feasibility and planning.

Security by design

Security is not a checkbox at the end. We follow OWASP guidelines from day one, review each other's code and test for vulnerabilities before every release.

Long-term partnership

The work doesn't stop at launch. We offer management, monitoring and ongoing development. Your web app stays up to date, secure and aligned with the changing needs of your organisation.

Our development process

From the first conversation to launch and ongoing development: this is how we work together on your web application.

Introduction and analysis

We start with a no-obligation conversation to understand your goals, challenges and wishes. Together we map out the scope and priorities.

Concept and design

We translate your wishes into wireframes, user stories and a technical design. We define an MVP so you can go live quickly and gather real feedback.

Iterative development

Our team builds in sprints of one to two weeks. After each sprint you receive a working demo and access to the test environment to give feedback straight away.

Launch and growth

After acceptance testing, your web app goes live. We then offer management, monitoring and continuous development based on user feedback.

Security and compliance

Trust starts with security. We build web applications with security as the foundation, not as an afterthought.

OWASP Top 10

We structurally mitigate the most common vulnerabilities, from SQL injection and cross-site scripting to broken access control. Every release is tested before it goes into production.

GDPR-compliant

Personal data is processed in line with the General Data Protection Regulation (GDPR). Data minimisation, encryption and the right to erasure are built in by default.

Role-based access control

Fine-grained access control so users can only reach the data and features relevant to their role. No unnecessary permissions, no added security risks.

Encryption and monitoring

Data in transit and at rest is encrypted. Logging and real-time monitoring flag unusual activity early, so you always have clear visibility of what is happening.

Frequently Asked Questions

What exactly is a web application? +
A web application is software that runs in the browser, so users have nothing to install. Think of dashboards, client portals, scheduling tools or internal business systems. All data is held centrally on a server, which means everyone always works with the same version, whether on desktop, tablet or mobile.
What is the difference between a website and a web app? +
A website is primarily informational: visitors read content and move between pages. A web application is interactive: users log in, enter data, generate reports or manage processes. A web app often replaces desktop software or manual workflows.
When is a custom web app the right choice? +
Custom software makes sense when standard SaaS tools don't fit your specific processes, when you want to integrate multiple systems into one workspace, or when you have strict security or compliance requirements. It also offers more flexibility when scalability matters.
How long does it take to build a web app? +
Timescales depend on complexity. A simple internal tool or MVP can be ready within a few weeks to a few months. A comprehensive platform with multiple integrations usually takes longer. We work in short sprints so you can test working components early on.
What determines the cost of a custom web app? +
The investment is determined by the number of features, the complexity of integrations, security requirements and the level of design you want. We always start with a clear scope definition so you know what to expect upfront. A phased approach with an MVP keeps the initial investment manageable.
Which technologies do you use? +
We choose the technology that best suits your project. For front ends we often work with React, Vue.js or Astro. For back ends we build with Node.js, Python or Go. We host on cloud platforms such as AWS, Azure and Google Cloud.
How do you ensure security? +
Security is part of our development process, not an afterthought. We follow the OWASP guidelines, apply input validation, use encryption for sensitive data and implement role-based access control. Code is peer-reviewed, and we run security tests before every release.
Can a web app integrate with our existing systems? +
Yes, integration is one of the real strengths of custom software. We build API integrations with CRM systems, ERP packages, accounting software and other tools you already use. This gives you one workspace instead of separate systems: duplicate data entry disappears and processes are automated end to end.

Shall we build a web app together?

Tell us about your project. We're happy to advise you, without obligation, on the best approach, from the first idea through to a working web application that moves your organisation forward.

Edit content