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Is a Linux desktop distribution directly based on Ubuntu. It uses the Calamares installer and includes NX Desktop and NX Firewall on top of the KDE Plasma 5 desktop environment and MauiKit Applications.
A free, open source cross-platform flight simulator developed by the FlightGear project since 1997.
A powerful open source cross-platform solid modeling system that includes interactive geometry editing, high-performance ray-tracing for rendering and geometric analysis, a system performance analysis benchmark suite, geometry libraries for application developers.