A generation of intranet and line-of-business applications was built on Classic ASP and ASP.NET Web Forms. They still work, and they are tied to a framework that modern .NET left behind. We model the real source and generate a modern web application from it.
This is for teams holding Classic ASP or Web Forms applications that are too useful to retire and too awkward to extend.
This one does have a genuine technical dead end, and it is worth being precise about where it is.
ASP.NET Web Forms runs on .NET Framework. Microsoft did not carry it forward to .NET Core or any later version, so there is no in-place upgrade onto the platform where the tooling, the performance work and the ecosystem now live. The framework is supported on Windows; it is not going anywhere new.
Classic ASP still executes on IIS as a Windows component, which is why these applications have survived so long. Nothing about it has been developed in two decades, and VBScript knowledge is now genuinely rare.
ViewState, postbacks and server-side control trees were designed before single-page applications and APIs. Every current requirement, from responsive layout to a mobile client to a clean integration point, is harder than it should be.
When every other system in the company is on modern .NET, the Web Forms application stops getting attention. Dependencies drift, security review gets uncomfortable, and the gap between this and everything else widens each year.
A hand rewrite works your business rules out again from documentation and memory, which is where undocumented behavior gets lost. We carry them across from the real source instead.
Code Analyzer reads every line of the Classic ASP and .NET WebForms source: every page, code-behind file, user control, include and stored procedure it calls, along with the data access and the business rules buried inside them. From that we build a model of how the application actually behaves. Gaps are surfaced, not guessed.
Code Transformer maps the model onto a modern architecture and generates a modern web application, 90%+ automated. Generating from the model gives you an application built the way someone would build it today, instead of old workarounds in a new language. Our engineers handle the custom pieces no automated conversion can reach, with AI assistance, and check the result against your original system.
Side-by-side testing runs the new system and the old one on the same inputs and compares what comes out. The business rules held in the model give a second, separate check that does not rely on the tests alone. Automated test coverage is built alongside the transformation.
TypeScript and React by default, or Vue and similar frameworks where your standards call for it. Readable by any web developer you hire.
The result runs on current, supported runtimes rather than on a framework that modern .NET left behind. Your platform choices open back up.
The postback and ViewState model is replaced by a clear split between the interface and the business logic, so other systems can integrate with it properly instead of scraping pages.
You can host it, maintain it, and extend it yourselves, with no dependency on us to keep it running.
A track record across major enterprises
Web Forms is part of .NET Framework, which is supported on Windows. It was not carried forward to .NET Core or later versions, so there is no upgrade path onto modern .NET. The application can keep running; it cannot follow the platform.
Classic ASP still runs on IIS as a Windows component, so these applications continue to work. It has had no meaningful development in about two decades, and finding people who can safely change VBScript is the practical problem.
For a .NET team it is a sensible direction, particularly on a smaller application. On a large Web Forms codebase the work is in unpicking the control model and the code-behind page by page, which is exactly the part conversion automates.
No, and it is common, usually the residue of a migration that stopped halfway. Both are read into the same model, which also shows you where the two halves actually depend on each other.
Business rules move across through a model built from your real code, rather than being re-typed by hand. We then check the result two ways: side-by-side testing on the same inputs, and the business rules held in the model as a separate check.
Usually with the free assessment: a complete dependency map, risk scoring, an effort model and a costed migration plan, produced from your own source code.
The assessment is free and built from your own source code. If you would rather see output first, we can run a paid proof of concept on a representative slice of the application.