gosub-io/gosub-engine

Health v2 · maintenance only

Flags: prerelease_only

Adoption not part of the score

3676 stars · 182 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

Gosub is a modular, embeddable web browser engine written from scratch in Rust, with spec-compliant HTML5 and CSS3 parsers, an async networking stack, and pluggable render backends (Cairo, Skia, Vello) and JavaScript engines (V8). It is a community-driven project aiming to diversify the browser engine landscape, currently in active early-stage development.

Use cases

• embed a browser engine in a Rust application
• build a custom web browser with pluggable components
• parse HTML5 documents in Rust
• parse and validate CSS3 in Rust
• render web content headlessly
• run a browser engine compiled to WebAssembly
• experiment with alternative browser engine architectures

When to choose

• you want to build a custom browser or embed web rendering in a Rust app
• you need spec-compliant HTML5/CSS3 parsing as standalone crates
• you want to swap rendering backends or JavaScript engines
• you want to contribute to or study browser engine internals

When to avoid

• you need a production-ready engine with full web standards support today
• you just need to display web content without customization (use WebView or an existing browser)
• you need mature JavaScript/DOM support for real-world sites

Facets

library · maturity experimental

parser http-client graphics interpreter web-development browser-extensions developer-tools rust cross-platform wasm windows browser-engine html5-parser css3-parser render-backend v8 embeddable modular linux macos

Member repositories

For agents

markdown · JSON · MCP: product_card(name="gosub-io/gosub-engine")