Web Application
A web application is a software application that is used through the browser, without installation on the user's device.
What is a web application?
A web application is a software application that runs on a web server and is used through an internet browser. The user doesn't need to install anything — opening a URL is sufficient. Behind the scenes, the server (the backend) processes requests and sends the results as HTML, CSS, and JavaScript to the browser (the frontend). Modern web applications are often built as Single Page Applications (SPAs) that provide a smooth, app-like experience without the page needing to reload constantly.
How does a web application work?
A web application works according to the client-server model. The browser (client) sends a request to the web server, which processes the request — for example, retrieving data from a database — and returns the result. In modern web applications, much processing happens in the browser itself through JavaScript frameworks like Vue or Nuxt. The backend, often built with PHP (Laravel, Symfony) or Python, handles business logic, authentication, and database communication. Communication between frontend and backend occurs through APIs, usually in REST or GraphQL format.
Example
A healthcare organization needs a central portal where employees can view client data, fill in reports, and assign tasks. Wabber builds a web application that employees access through their browser — on the office computer, on a tablet during home visits, or on the phone while on the road. The system is secured with role-based access: a care provider sees different information than a manager. Because it's a web application, IT doesn't need to install anything and updates are automatically applied for all users simultaneously.
Why is a web application important?
Web applications are important because they make software accessible without installation barriers. Employees always work with the latest version, regardless of their device or location. For businesses, this means lower management costs, faster rollout of new functionality, and better collaboration between teams. Wabber builds web applications that precisely match our clients' work processes — from tracking systems and dashboards to complete business portals. The combination of modern frontend frameworks, a solid backend, and real-time data ensures applications that are fast, reliable, and future-proof.
Related solutions
Frequently asked questions
What is the difference between a web application and a website?
A website is primarily informational — visitors read content, view pages, and navigate. A web application is interactive: users log in, enter data, manage processes, and receive personalized information. A website for a restaurant shows the menu; a web application for that same restaurant manages reservations, inventory, and staff schedules. Wabber builds web applications that digitize business processes.
What is the difference between a web application and a PWA?
A PWA (Progressive Web App) is a web application with extra capabilities: home screen installation, offline functionality via Service Workers, and push notifications. Every PWA is a web application, but not every web application is a PWA. Wabber recommends PWA functionality when users need to use the app offline or on mobile, such as with event apps or field service workers.
How long does it take to build a web application?
The timeline depends on complexity. A simple dashboard or portal can go live within a few weeks, while an extensive tracking system or business platform takes several months. Wabber works agile: we deliver working software in short sprints, so you can test and provide feedback early on. This prevents surprises at the end of the process.
Is a web application secure?
Security depends on how the application is built. Wabber applies security-by-design: HTTPS encryption, role-based access control, input validation, protection against SQL injection and XSS, and regular security audits through tools like SonarQube and Sentry. Our applications run on Dutch servers and we are working towards ISO 27001 certification. Security is not an afterthought but an integral part of our development process.
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