⚙️ Rapid Application Development

A multi-platform .NET UI framework

Open Source

Build cross platform desktop apps with web technologies

Open Source

Create multilingual price quote, ROI, and finance calculators with drag & drop. Easy to embed on any website. No developer or coding skills required. Try our easy calculator builder for free on our website - instant access, no signup required.

Visit website freemium

Powerful, flexible and easy to use, Qt will help you not only meet your tight deadline, but also reduce the maintainable code by an astonishing percentage.

Open Source

Build Mobile, Desktop and WebAssembly apps with C# and XAML.

Open Source

Open source Python framework for rapid development of applications that make use of innovative user interfaces, such as multi-touch apps. Installation on WindowsInstallation on Windows. Installation; What are wheels .

Open Source

wxWidgets: Cross-Platform GUI Library

Open Source

Embeddable HTML/CSS/script engine

Open Source

Build custom internal tools in minutes.

freemium $10.0 / Monthly (Startup)

GTK+ is a multi-platform toolkit for creating graphical user interfaces.

Riverbank | Software | PyQt | What is PyQt?

Build Enterprise-Grade Apps Fast.

Mendix is the fastest and easiest low-code platform used by businesses to create and continuously improve mobile and web apps at scale.

Build beautiful native apps in record time 🚀

Open Source