• Web & software development
  • Based in Portugal, working internationally
  • Start eligible projects with 10%
  • Websites, booking systems and software
  • PT · EN · NL · ES
  • From idea to launch and ongoing management
  • WebCastelo Care available after launch
Skip to main content

Web applications

Custom web applications for customers, teams and business processes.

Customer portals, partner portals, dashboards, calculators and workflow tools. Built for the people who use them every day.

For companies that have outgrown spreadsheets and generic tools.

  • Overview
  • Customers
  • Tasks
  • Reports

Dashboard

248

Active customers

17

Open tasks

€21.4k

This month

  • Approve quote 1042
  • Plan installation
  • Send invoice
  • Portugal based
  • Working internationally
  • Four languages
  • Real platform projects
  • Client portals
  • Dashboards
  • Internal tools
  • Role based access
  • Real time data
  • Business workflows
  • Integrations
  • Secure accounts
  • Reporting
  • Scalable architecture

When a web app is the right answer

You do not need an application for everything. You do need one when these start to hurt.

  • Portugal based
  • Working internationally
  • Four languages
  • The same data is typed into several tools
  • Work is coordinated in spreadsheets and chat
  • Customers ask for status updates by email
  • Approvals depend on someone remembering
  • Reporting is rebuilt by hand every month
  • Standard software forces you to change how you work

What we build

  • Customer portals
  • Partner portals
  • Internal dashboards
  • Calculators and configurators
  • Workflow and approval apps
  • Member environments
  • Operational platforms

What an application can include

Access

  • Authentication
  • User roles
  • Permissions
  • Customer accounts
  • Audit history

Work

  • Dashboards
  • Customer data
  • Workflows
  • Files
  • Notifications
  • Real-time updates

Business

  • Payments
  • Subscriptions
  • Reporting
  • Integrations
  • Admin tools
  • Exports

Not every application includes all of this. Scope follows the workflow you need to support.

How an application is developed

  1. 01

    Discovery

    The process today, the people in it and the pain.

  2. 02

    Requirements

    What the first version must do, and what it must not do yet.

  3. 03

    Architecture

    Data model, roles, integrations and technical choices.

  4. 04

    Prototype

    Clickable screens before we build the logic.

  5. 05

    Development

    Short cycles with working software you can try.

  6. 06

    Testing

    Real data, real users, real edge cases.

  7. 07

    Release

    Migration, training and go live.

  8. 08

    Iteration

    Improvements based on how it is actually used.

Investment

Web applications are priced on workflows, users, data, integrations and technical complexity.

Custom scope

Larger applications are delivered in agreed milestones so you see working software early.

Cost depends on

  • Number and depth of workflows
  • User roles and permissions
  • Data model and volume
  • Integrations with existing systems
  • Payments or subscriptions
  • Reporting requirements
  • Technical complexity and security needs

Prefer to discuss your project directly?

Send a short message with what you need. You get an answer from the people who build it.

Contact

Website, portal or full application?

The Finder asks about your process and tells you which of the three fits.

Find my solution

Web Apps

Questions about web apps

Prefer to discuss your project directly?

Send a short message with what you need. You get an answer from the people who build it.

Usually yes. If the other system offers an API or a structured export, we can connect it. We check this before quoting.

Describe the process you want to fix

One paragraph about how it works today is enough for a first conversation.

  • Portugal based
  • Working internationally
  • Four languages
  • Real platform projects
  • Milestone based delivery
  • Managed support available