Migrate Delphi to a Web App | Legacy Rescue
To migrate a Delphi or Object Pascal desktop application to the web, you re-implement its business logic on a modern web stack, migrate your data out of Paradox, BDE, or Firebird into a robust database, and deliver a browser-based app your whole team can use anywhere. We do not attempt to auto-translate VCL forms into web pages. We understand what your Delphi app does, rebuild it cleanly for the web, and carry your data across without loss.
Why Delphi and BDE are a liability now
Delphi built reliable Windows software for decades, but a classic VCL app tied to the Borland Database Engine, Paradox tables, or an older Firebird version is increasingly risky to keep running. The BDE is long deprecated, Paradox files corrupt under heavy concurrent use, and finding developers who still know this stack is getting harder every year.
- Deprecated data layer: BDE and Paradox are unsupported and fragile on modern Windows.
- Desktop-only reach: VCL apps run on Windows PCs, not on tablets, phones, or from home.
- Concurrency limits: file-based Paradox tables struggle once several users write at once.
- Maintenance risk: a shrinking pool of Delphi developers pushes up your support cost.
Our migration approach: rebuild the logic, keep the data
Delphi apps often pack years of hard-won business rules into their code. That knowledge is valuable, so we preserve it. Rather than run your VCL forms through a converter, we analyse how the application behaves and re-implement it as a clean, modern web app. The result is maintainable and future-proof, not a fragile copy of the old desktop screens.
Your data comes with you. We migrate Paradox, BDE, or Firebird data into a modern server database and verify every record. If you are still deciding on direction, our comparison of web versus installed software lays out the trade-offs, and the whole effort sits within our legacy software rescue service.
What you get
- Web and mobile: a responsive app that runs in any browser on any device.
- Real concurrency: 50 or more simultaneous users on a proper client-server database.
- Role-based access: fine-grained permissions and an activity log.
- Automatic backups: scheduled, restorable backups replace fragile Paradox files.
- One-click updates: deploy centrally so nobody runs an outdated version.
How the project runs
We deliver remotely with English-language support at every stage, and we stay honest about it: no invented local presence and no fake certifications, only a clear and disciplined process.
- Audit: we review your Delphi source, forms, and data model to capture every rule.
- Rebuild: we re-create the workflows as a modern web application.
- Data migration: we move your Paradox, BDE, or Firebird data and validate it.
- Training and handover: we train your staff and stand by during go-live.
When you want capabilities the original Delphi tool never had, we can build them through our custom software development service.
Frequently Asked Questions
Can you reuse our old Delphi code?
We reuse its logic and business rules, not the Object Pascal source directly. We study the app, then rebuild it cleanly for the web, because automated VCL-to-web conversion produces unstable results.
Will we lose any data?
No. We migrate your Paradox, BDE, or Firebird data into a modern database, record by record, and verify it against the original before you switch over.
How long does a migration take?
A focused single-purpose app can move in a few weeks, while a large system spans a few months. You get a firm timeline once the audit is complete.
Do we keep our existing database?
If you already run Firebird or another server database, we can keep it. Fragile file stores like Paradox we migrate to a modern engine so concurrent use is safe.
