with Agentic AI purpose-built for modernization
If you've built applications using C#, you've already harnessed the power and flexibility of the language. But the digital landscape is shifting. Users now demand web-based access to applications, from any device, anywhere. It's time to bring your PowerBuilder and DataWindows applications into the modern era with Blazor.
We also support the latest versions of .NET, including .NET 10.
VELO automates up to 95% of your PowerBuilder conversion, turning DataWindows, PowerScript, and embedded SQL into idiomatic C# and Blazor. The output is an alpha-ready application that compiles and runs. Your team takes it to production, or our AI Squad finishes the last mile.
VELO doesn't rebuild from scratch. Each PowerBuilder construct is transformed into its idiomatic equivalent on a cloud-native Blazor foundation.
PowerBuilder applications hold decades of embedded business logic and tightly coupled database interactions. The platform's architecture doesn't map cleanly to modern web frameworks, which is what makes manual migration so risky.
DataWindows fuse data retrieval, presentation, and validation into one object. No modern equivalent exists, so each must be decomposed into separate data, UI, and validation layers.
Decades of business rules live in PowerScript event handlers, functions, and global variables, often undocumented and deeply coupled to the runtime.
OLE controls, DDE calls, Windows API integrations, and COM objects have no direct web equivalent. Each dependency needs analysis and a targeted solution.
In regulated industries, modernization carries two linked fears. Surface testing passes, then production breaks or exposes. VELO is built to address both at once.
Decades of rules live inside DataWindow validation, PowerScript handlers, and stored procedures, much of it undocumented and load-bearing. VELO extracts and converts that logic systematically rather than approximating it.
A move to the web can open gaps if security is an afterthought. VELO lands your application on a standard, defensible architecture and supports the security and compliance posture these industries require.
Most integrators run a rewrite the same way: a large team, an open-ended timeline, and a bill that grows with the project. The pace is set by headcount and the outcome is never priced.
Because the agents do the modernization work, VELO prices the outcome up front: a fixed price to alpha-ready on Blazor, and a fixed price to production through the optional AI Squad. You know the cost before work begins, not after it overruns.
Moving off PowerBuilder affects your ability to hire developers, deploy to the cloud, integrate with modern systems, and maintain security compliance.
VELO combines deterministic code transformation with agentic AI. The automation does the bulk of the work; a clearly scoped last mile takes you to production.
VELO scans your codebase and catalogs every DataWindow, function, and dependency. You receive a scope report and a fixed-price quote.
PowerScript becomes C#, DataWindows become Blazor components, and embedded SQL moves to Entity Framework.
The Quality Agent validates the output. You get full source code, a validation report, and documentation of what remains.
The remainder is custom controls, third-party integrations, DataWindow edge cases, functional testing, and release hardening. Your team can complete this phase using the converted codebase as a foundation.
Need help closing the last mile? Our AI Squad takes the alpha-ready application to a production release candidate at a fixed price. Learn more about AI Squad →
VELO handles the full scope of PowerBuilder conversion, including the constructs that make manual migration most difficult.
Decomposed into separate data, presentation, and validation layers. Grid, freeform, tabular, crosstab, and composite DataWindows are all supported.
Event handlers, functions, global variables, and user objects become idiomatic C# with proper class structure, error handling, and naming.
Inline SQL, stored procedures, and database cursors migrate to Entity Framework or direct ADO.NET data access patterns.
Windows and controls become Blazor pages and components. Layout, tab order, and workflows are preserved so users need no retraining.
The modernized application lands on a standard Blazor architecture, ready for Azure. No desktop install, client-server, or runtime licensing.
Blazor on Azure is the recommended path. Where your team requires it, Java or C# with an Angular front-end is also available.
GAPVelocity AI is a Microsoft Solutions Partner and Azure AI Foundry partner with 35+ years of experience in legacy application modernization across enterprise environments.
"GAPVelocity AI technology is actually cheaper than a manual rewrite in time and dollars. It cut our costs in half. They have a total command of the modernization domain space."
Greg Duhachek, CEO
Explore case studies, whitepapers, and technical documentation on PowerBuilder conversion.
See how enterprise teams have converted PowerBuilder applications to modern platforms with GAPVelocity AI.
View case studies →Understand our proven process framework for legacy application modernization, from assessment through deployment.
Read the methodology →Analyze your PowerBuilder codebase and get a detailed scope report with automation coverage percentage and estimated effort.
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