Qt Open Source Projects
Qt is a cross-platform application framework for building graphical interfaces and interactive software. It provides reusable components for windows, controls, networking, graphics, and other common tasks, helping developers create applications that can run across desktop and embedded operating systems with a consistent codebase. Qt is commonly used with C++, and language bindings make it accessible from other programming environments as well.
Open source tools in this area include desktop applications, interface libraries, visualization software, and utilities built with Qt. When choosing one, consider its license, maintenance activity, supported Qt versions, platform requirements, accessibility, and how well it integrates with your existing tools. Qt-based software can be useful for developers creating cross-platform applications, as well as users looking for capable desktop tools on Linux and other systems.
2 repositories · updated June 18, 2026
Notes: A Fast and Beautiful Cross-Platform Note-Taking App
Notes is an open-source, cross-platform note-taking application designed for speed and beauty. Written in C++ with Qt, it offers robust features like Markdown support, Kanban boards for tasks, and comprehensive organization options. This app prioritizes user privacy, ensuring a secure and efficient environment for capturing your thoughts.
PyQtGraph: Fast Data Visualization and GUI Tools for Scientific Applications
PyQtGraph is a powerful, pure-Python graphics library tailored for scientific and engineering applications. It provides fast data visualization and GUI tools, leveraging NumPy for numerical processing, Qt's GraphicsView for 2D, and OpenGL for 3D displays. This makes it an excellent choice for high-performance data plotting and interactive interfaces.