Starts < 1 second. Size 30 MB

No license. No converters. No workarounds. Just open, draw, save.

What's in it:
➡️ Full 2D drafting — LINE, PLINE, CIRCLE, ARC, ELLIPSE, SPLINE, HATCH, OFFSET, TRIM, EXTEND, FILLET, MIRROR, ARRAY, ROTATE, SCALE, EXPLODE… the entire AutoCAD-style command set

➡️ Native DWG & DXF (R13–R2018) read/write — the de-facto industry-standard format, without third-party library licenses

➡️ 3D modelling with ACIS solids tessellation — BOX, SPHERE, CYLINDER, EXTRUDE, REVOLVE, LOFT, SWEEP, ARRAY3D — and 3DSOLID/REGION/BODY entities from DWG render correctly

➡️ Paper space + layouts — multi-tab model space, viewport projection with inline MSPACE overlay, VPORTS presets, plot styles (CTB/STB), PRINT directly to system printer

➡️ Full dimensioning — linear, aligned, angular, radial, diameter, ordinate + DIMSTYLE with everything (DIMASZ, DIMSCALE, DIMEXO, DIMEXE…)
MLEADER, MTEXT, tables, GD&T tolerances, MLINE — with dedicated style managers

➡️ STL, STEP AP203, OBJ import/export, PDF plot, WBLOCK, XREF — everything you need to fit into an existing CAD chain
GPU-accelerated via wgpu — scales smoothly to large models with many solids

➡️ Under the hood: Rust for memory safety and performance, iced for the UI, wgpu for the GPU rendering. Cross-platform: Windows, macOS, Linux. GPL-3.0 license.

➡️ Product page: https://www.open-aec.com/open-cad-studio/
➡️ Repo: https://github.com/HakanSeven12/OpenCADStudio
➡️ Releases: https://github.com/HakanSeven12/OpenCADStudio/releases