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Custom Web Application Development

Have your spreadsheets and off-the-shelf software stopped keeping up with your business? We build custom web applications: business tools, client portals, SaaS platforms and artificial intelligence integrations, with React, Node.js and .NET.

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Custom business web application development: dashboard connected to a database

Business tools built around your processes

A custom web application fits the way you work, instead of forcing you into the logic of standard software. We build:

  • business tools that replace shared Excel files;
  • secure client portals and extranets;
  • SaaS platforms and dashboards;
  • mobile apps for iOS and Android connected to your platform;
  • connectors to your ERP, your CRM and your existing tools.
Web application tech stack: cloud, database, security and deployment

A modern, proven tech stack

We choose solid, well-documented technologies that are easy to evolve: React and TypeScript for interfaces, Node.js and C# / .NET for the back end, SQL Server or PostgreSQL for data.

Cloud hosting on Azure or dedicated servers, single sign-on with Microsoft Entra ID, continuous integration and deployment: your application is designed from day one for security, performance and scalability.

Artificial intelligence integration in a web application

Integrate AI into your applications

Artificial intelligence delivers real gains when it is connected to your data. With our AI integration services, we add to your tools:

  • assistants that answer from your internal documents (RAG);
  • automatic document extraction and classification;
  • AI agents that automate repetitive tasks;
  • report and summary generation.
Agile web application development, from prototype to production

An agile method, from prototype to production

We start with scoping workshops to understand your needs and your users, then deliver a clickable prototype. Development moves forward in short sprints, with a demo at every step: you stay in control of priorities.

After launch, we keep your application evolving and secure under an application maintenance contract. Need a business website or an online store instead? See our website design services.

CUSTOM WEB APPLICATIONS

Some of our work

  • Benson Shoes
    benson-shoes.be
    Migration of a shoe store from Magento to PrestaShop

    Online store for the prestigious shoe brand Benson Shoes, built with PrestaShop. The website is synced with the stock of its two physical stores in Belgium, which run XPOS point-of-sale systems.

  • Vapote Style
    vapotestyle.fr
    E-liquid online store built with PrestaShop

    Vapote Style is an online store and a reference for DIY e-liquid flavors, with more than 3,000 flavors and concentrates for e-cigarettes. It is one of the online leaders in its market.

  • Gfeller Bio
    Gfellerbio.ch
    Fresh organic produce online store built with PrestaShop

    Gfeller Bio is a Swiss online store selling organic fruit and vegetables. A pioneering success story started 30 years ago, it has become a reference in its sector and demand keeps outgrowing supply.

  • NeoSol
    Neo-sol.fr
    Professional mats online store built with PrestaShop

    This specialist in professional mats sells its products B2B with PrestaShop and manages hundreds of products that can be customized or quoted on request.

  • Talos
    Talos.tn
    Office supplies online store built with PrestaShop

    A subsidiary of the Meuble Intérieurs group and an online leader in office supplies, this PrestaShop store offers all the supplies and equipment needed to run an office.

  • Zoprodo
    Zoprodo.com
    Customizable clothing online store built with PrestaShop

    A specialist in customizable clothing, this online store offers many clothing brands that businesses and associations can customize with their own branding.

    What our clients say

    A few words from clients who trusted us.

    Jonathan Urso
    VapoteStyle.fr

    Aurone is a highly responsive team of professionals who are always available, whether for advice, an urgent fix, a module change or web marketing. We have complete confidence in their skills.

    Urs Gfeller
    GfellerBio.ch

    We trusted Aurone with building and then redesigning our PrestaShop online store, and our results have soared since. The team supported us all the way and always found technical solutions to our requests.

    Samya Ahmada
    ParaEthnik.com

    Overall I am very satisfied with the work of the whole Aurone team. My contacts were great project managers: collaboration was smooth and friendly from start to finish, and they advised me on which features to use.

    How much does a custom web application cost?

    Describe your project in a few seconds

    The budget for a web application depends on the number of features, the integrations and the security requirements. To keep the investment under control, we often suggest starting with a focused first version (MVP), then expanding it step by step.

    Every project is quoted after a scoping workshop, with prices in US dollars. Pay in 3 interest-free installments for projects over $1,000.


      WEB APPLICATION PRICING

      Frequently asked questions

      Answers to the most common questions about custom web application development.

      How much does a custom web application cost?

      The budget depends on the scope of features, the integrations and the level of security required. We price the project after a scoping workshop, and can start with a focused first version to limit the initial investment.

      How long does it take to develop a web application?

      A first working version generally takes 2 to 4 months. The application is then expanded in successive iterations.

      Web app or mobile app?

      A web application runs in the browser on every device, without going through the app stores, and costs less to maintain. It can also be installed on mobile as a progressive web app (PWA).

      Can you take over an existing application?

      Yes. We audit the code and the architecture, then suggest evolving, modernizing or rebuilding it depending on its condition.

      How do you secure the application’s data?

      Strong authentication, fine-grained permissions, encrypted traffic, backups and regular updates: security is built in from the design stage.

      Can AI be added to an existing tool?

      Yes. We can connect an AI assistant or agent to your application and your documents, without rebuilding everything.

      Do you provide maintenance after launch?

      Yes, with our application maintenance and support services covering fixes, enhancements and security.

      Do you work with clients in the US, the UK and worldwide?

      Yes, since 2007. Projects are run remotely, with regular video calls, sprint demos and written follow-up. Prices are shown in US dollars and we accept all currencies.

      Do you offer white label web application development for agencies?

      Yes. Agencies can outsource the development of their clients’ web applications to us, under their own brand. See our white label services.

      For agencies: white label web services

      Are you a web agency? We deliver your clients’ projects under your brand: NDA signed upfront, no contact with your clients and deliverables in your name.

      Our other web services

      Website design services

      Website design

      A fast, SEO-ready business website that turns visitors into leads.

      Mobile app development

      Mobile app development

      iOS and Android apps from one codebase, connected to your platform.

      Saas development

      SaaS development

      Scalable SaaS platforms with subscriptions and multi-tenant architecture.

      Ai integration services

      AI integration

      AI chatbots, assistants on your documents and AI agents.

      Application maintenance services

      Application maintenance

      Bug fixes, security updates and new features for your app.

      Website security services

      Website security

      Security audits, malware removal and hardening for websites and applications.