nanoCAD Free’s (for simple 2D) or DraftSight’s paid tier (more feature-complete). Final Verdict: 7.5/10 nanoCAD is an excellent choice if you need a no-cost, legal, Windows‑only 2D CAD tool with near‑perfect AutoCAD file compatibility and you don’t require XRefs or 3D.
Note: The free version is essentially a robust 2D viewer/editor, but with notable omissions like XRefs. Excellent DWG fidelity – nanoCAD opens and saves files without corrupting geometry, text styles, or dimensions. Command aliases (e.g., L for Line, C for Circle) match AutoCAD, making transition easy for experienced users. nanocad review
, the $180/year Plus version is a steal for XRef support and advanced raster tools. The Pro version is harder to recommend over BricsCAD or ZWCAD unless you specifically want a lightweight BIM workflow. nanoCAD Free’s (for simple 2D) or DraftSight’s paid