Logitune is a Linux-native tool that configures Logitech peripherals via HID++ 2.0 without daemons, supporting per-app profiles and extensibility through JSON device descriptors.
OpenBoard is a C++/Qt-based interactive whiteboard supporting Windows, macOS, and Debian. It embeds web widgets for interactive teaching, with community-driven translations.
Shotcut is a mature, cross-platform video editor using MLT for multimedia processing and Qt 6 for its UI. Its architecture cleanly separates UI from processing, enabling native builds across major OSes.