noticedraw

noticedraw is a cross-platform drawing library and toolchain designed for real-time vector illustration and collaborative whiteboarding. It provides a minimal core API for creating and editing vector primitives such as strokes, paths, and shapes, along with a scene graph built from layers and a non-destructive editing workflow that includes undo and redo.

The library targets web and native platforms, exposing a JavaScript/TypeScript API with bindings to Rust and Swift, enabling integration into browser apps and native clients. Rendering backends support both a 2D canvas path and a GPU-accelerated WebGL path, with optional SVG export for interoperability. It emphasizes responsive input handling across touch, mouse, and pen devices, and includes stroke smoothing, pressure sensitivity, and brush textures to emulate traditional media.

Architecturally, noticedraw offers a modular rendering pipeline, a plugin system for brushes and effects, and a lightweight layer system for grouping and ordering content. It also provides collaboration hooks, such as WebRTC for peer sessions or server-backed syncing for multi-user workspaces.

Noticedraw is released under an open-source license and is maintained by a community of contributors. It is used by independent developers in educational tools, whiteboard applications, and sketching components within larger platforms. As with similar libraries, users are encouraged to profile performance, optimize memory usage, and design with accessibility in mind.