SketchUp is a 3D modeling software brand best known for its intuitive, easy-to-learn tools used in architecture, interior design, construction, engineering, and entertainment. Originally developed by @Last Software and later owned by Google, SketchUp is now part of Trimble and offers both desktop and web-based products, plus an ecosystem of extensions and 3D content. The platform focuses on enabling professionals and hobbyists to design, visualize, and communicate 3D ideas quickly.