Google — Sketchup Pro
Given the rise of (for BIM) and Blender (for free modeling), some wonder if SketchUp is obsolete.
Google noticed SketchUp because they needed a way for people to build 3D models for . They bought the company in 2006 and did something bold: they released a completely free version for the public. google sketchup pro
This remains the killer feature. Click a flat face, pull it up into a 3D shape, push it through a wall to create a window. It is intuitive enough for a 10-year-old but powerful enough for a skyscraper designer. Given the rise of (for BIM) and Blender