Excalidraw but for 3D Drawing
Excalidraw for 3D is a crowded claim without a live demo to prove it.

Out-of-band code annotations with Excalidraw, but comment management is still crowded.
Engineers fighting comment decay who want rich inline documentation without source pollution
Code Companion (inline documentation) · GitHub Wiki (separate doc storage)
The Workflow:
Markdown Side-Peek: High-fidelity documentation for complex logic. Infinite Canvas: Draw architecture diagrams directly linked to functions. Git-Native: Notes are stored in a .notesgutter folder. They version with your code and work 100% offline. Privacy: No cloud. No tracking. Your data stays in your repo.
Preview: https://github.com/ParasKoundal/NotesGutter/raw/main/Preview...
Install: Search "NotesGutter" in the VS Code/Cursor/Antigravity Marketplace or find it here: https://marketplace.visualstudio.com/items?itemName=ParasKou... https://open-vsx.org/extension/ParasKoundal/notesgutter
I'd love to hear what you think about it : https://github.com/parasKoundal/NotesGutter.
Excalidraw for 3D is a crowded claim without a live demo to prove it.
RDF export for diagrams.net when semantic web tooling already exists elsewhere.
Auto-animated Excalidraw diagrams from prompts beats manual canvas setup.
Plain Markdown storage keeps your snippets portable when SnippetsLab locks you in.
Useful for Excalidraw power users, but chart generation is a narrow use case.
Presentation mode and local storage for Excalidraw when the core tool lacks both.