| Feature | DoubleCAD XT 6 | AutoCAD LT (Paid) | DraftSight (Free Tier) | LibreCAD | | :--- | :--- | :--- | :--- | :--- | | | Free | ~$500/year | Freemium (Limited) | Free | | Native .DWG | Yes (v2018) | Yes | Yes | No (DXF only) | | 3D Modeling | Yes (ACIS) | No | No (2D only) | No | | Command Line | Yes | Yes | Yes | Yes | | Raster to Vector | Yes | No | No | No | | Learning Curve | Moderate | Steep | Moderate | Moderate |

: Excellent support for industry-standard formats, including reading and writing (up to R14), (Google SketchUp). Intelligent Architecture Tools