ActiViz 9.5 Release: Powering .NET 9 and WebAssembly for Desktop & Web

October 10, 2025

Alexy Pellegrini, Lucas Gandel and Julien Finet

Kitware is pleased to announce the release of ActiViz 9.5.

This version primarily focuses on enhancing the assemblies generated by the ActiViz wrapper by upgrading the dotnet target framework to .NET 9, as well as porting ActiViz to the Web using VTK WASM.
Based on VTK 9.5, this version also provides newly integrated features, such as vtkFastLabeledDataMapper allowing visualization of numerous labels at interactive frame rates. Read this related post for more information.

Activiz

ActiViz is a .NET library for 3D visualization and data processing. It exposes the API of the C++ Visualization Toolkit (VTK), to be used in C# or VB.

ActiViz interfaces with many existing applications and frameworks written in C#, including WindowsForm, Windows Presentation Foundation (WPF), Avalonia, or the Unity software. This enables the seamless and rapid integration of advanced algorithms and rendering techniques in various environments.

Now Compatible with .NET 9

ActiViz 9.5 supports .NET 9. All the improvements are listed in the related article from Microsoft.

Activiz on the Web using WebAssembly

ActiViz now empowers you to build rich, high-performance web apps with ease. Read this related post for more information.

ActiViz works seamlessly with your favorite JavaScript frameworks. We are exploring support for C#-based UI frameworks such as Avalonia UI and the Uno Platform that can already be deployed to the web. This would allow developers to design user interfaces in C# and XAML, maintaining one unified codebase for desktop and web.

If you are interested in this breakthrough capability of Activiz, reach out to Kitware to discuss how we can support your goals.

Support and Services

Looking to take your application to new heights? Get in touch with Kitware for expert development and support services to fast-track your success with ActiViz.