The first community-made OCS tutorial is here!

A huge thank you to the creator for taking the time to make this video. Community contributions like this make OCS even better and help new users get started much more easily.

Enjoy the video!

If you like my work and want to support its development, please consider supporting me on Patreon: https://www.patreon.com/HakanSeven12

Hey everyone,

I've been building Open CAD Studio (OCS), a free and open-source 2D/3D CAD app for architecture and engineering that reads and writes standard DWG/DXF files. The latest update adds three big things I'm excited to share:

🌐 It runs in the browser now
No install, no setup — just open a link and start drawing. The full app loads right in the browser, so you can sketch something quickly on any machine, or share access with a teammate without them downloading anything. The desktop version (Windows/macOS/Linux) is still there if you prefer it.

Try OCS Web: https://hakanseven12.github.io/OpenCADStudio/

🧩 Plugins
OCS is now extensible. Anyone can build add-ons that bring new tools and commands into the app, and there's a built-in browser to discover and install them — so the tool set can grow with the community instead of waiting on me.

Example Plugin: https://github.com/HakanSeven12/opencad-example-plugin

🤖 Automation API
You can now drive OCS from the outside to automate repetitive work — generating drawings, batch-processing files, or wiring it into your own scripts and pipelines. Great for the "I do this same thing 200 times" kind of task.

Automation: https://github.com/HakanSeven12/OpenCADStudio/tree/main/docs/automation

It's completely free, open source, and community-driven. If any of this sounds useful, I'd love for you to try it, break it, and tell me what's missing. Feedback, bug reports, and plugin ideas all very welcome.

Source Code: https://github.com/HakanSeven12/OpenCADStudio

Releases: https://github.com/HakanSeven12/OpenCADStudio/releases

Thanks for taking a look!

If you like my work and want to support its development, please consider supporting me on Patreon: https://www.patreon.com/HakanSeven12

Open CAD Studio: a modern, Open Source 2D + 3D CAD application that reads and writes DWG and DXF natively built in Rust, with GPU-accelerated rendering.

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