LEGO Digital Designer

LEGO Digital Designer was a free computer program produced by the LEGO Group for the Windows and macOS operating systems. It allowed users to build models using virtual LEGO bricks similar to computer-aided design (CAD) software, providing a way to design LEGO creations without needing physical bricks. Although the program is no longer officially supported, it was popular for its flexibility, allowing enthusiasts to create complex models digitally.