Qt5 GitHub Repositories (2026) · Open Source Tools

FluentQt (Fluent-Qt): Fluent / WinUI-style Qt Widgets UI components and Gallery for native C++ desktop apps, with optional PySide6 bindings and WebAssembly.

Open source patternmaking software to democratize fashion.

git-cola: The highly caffeinated Git GUI

Stellarium is a free GPL software which renders realistic skies in real time with OpenGL. It is available for Linux/Unix, Windows, macOS and Haiku. With Stellarium, you really see what you can see with your eyes, binoculars or a small telescope.

edb is a cross-platform AArch32/x86/x86-64 debugger.

A shell for wayland compositors

Practical and minimal image viewer

UI for minecraft bedrock linux

Otter Browser aims to recreate the best aspects of the classic Opera (12.x) UI using Qt5

Kiwix for Windows and GNU/Linux desktops

Qucs-S is a circuit simulation program with Qt-based GUI

Avogadro is an advanced molecular editor designed for cross-platform use in computational chemistry, molecular modeling, bioinformatics, materials science, and related areas.

VDU controls - a control panel for monitor brightness/contrast/...

A feature-rich online manga reader for Kobo E-Ink devices based on Qt6.

AniLiberty.Qt cross platform desktop client

Simple and small program allowing to set the environment of any executable.

A small C++ finite element method implementation developed as a part of my master's thesis

File manager for deepin desktop environment.

Seer - a gui frontend to gdb