A source-compatible WPF for every platform

the better WPF

Your XAML. Your code-behind. Your bindings, styles, templates and resources — unchanged. Now running on six platforms.

See pricing Watch it travel

You have a WPF application — or you simply think WPF is the most powerful UI framework ever built.

But WPF is Windows only.

OPF goes further.

Windows
Linux
macOS
Android
iOS
Web

One code base. Six platforms. No rewrite, no second UI, no compromise.

Completeness

100 % API coverage1

Including the parts everyone else leaves out.

MediaMediaElement, sound
3DViewport3D, Media3D
AccessibilityUI Automation
Bitmap formatsJPEG, PNG, WMP, JPEG XR, TIFF
Effects and shadersBlur, DropShadow, your own
PrintingXPS and PDF
DialogsFile, folder, print
DocumentsFlowDocument, PTS

Beyond the original

OPF does some things better

Source compatibility is the floor, not the ceiling.
Where WPF stopped, OPF keeps going.

Topic WPF gemelo OPF

Deployment JIT only AOT-compatible: starts faster, ships smaller, no runtime on the machine

MediaElement Error-prone, bound to the Windows media stack Stable on every platform, with an extended API

PDF XPS only — PDF needs a third-party component Writes real vector PDF itself: text stays searchable and selectable, images stay objects, links keep working

Text and fonts Fixed set of formatting options Extended formatting — letter-spaced text — and fonts loaded at run time

Web viewoptional add-on WebView2 needs Microsoft's runtime on the machine — and brings the airspace problem: the page covers everything drawn over it Microsoft-free, on Chromium through CEF — and on the desktop no airspace problem: the page is drawn into the scene, with your own UI on top of it

Licensing

Pricing

Preliminary
Figures below are a working draft and may change before release.

Non-commercial
open source

Free

For projects published under an open-source licence and not sold commercially.
Request
Most common

Single app

5,000 €one app, Windows and one more platform

Every further platform + 2,500 €.1
Buy
Seat

12,500 €per developer

Any number of applications, every platform included.
Buy
Enterprise

75,000 €per company

Unlimited developers and applications across the whole company.
Buy

Every paid licence includes 12 months of maintenance and support.

Individual platforms may have technically imposed limitations in functionality.

Ready to leave Windows behind?

Tell us about your application and we will tell you what porting it actually takes.

Talk to us