# twilco/kosmonaut

A web browser engine for the space age :rocket:

Repository: https://github.com/twilco/kosmonaut
Canonical: https://ross.abutalabs.com/products/kosmonaut
Language: Rust
License: MPL-2.0
License Family: copyleft
Topics: web, browser
Last push: 2025-11-24T23:44:17+00:00

## Health v2 (maintenance only)
Score: 56/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 53, release rhythm 35, longevity 100
- inputs: {"age_days": 2577, "days_push": 282, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1717, forks 31 (observed 2026-08-28T04:05:26.470450+00:00)

## What it is
Kosmonaut is an experimental web browser engine written in Rust that parses HTML and a small subset of CSS, then performs layout and rendering via OpenGL. It is primarily a learning project and currently supports only very basic HTML/CSS, so most real-world web pages will not render correctly.

## Use cases
- render simple HTML and CSS pages
- learn how browser engines work
- experiment with CSS layout engines in Rust
- study CSS cascade and box layout implementation
- run snapshot-based layout tests for a rendering engine

## When to choose
- you want to study or contribute to a from-scratch browser engine in Rust
- you need to render only very simple HTML/CSS documents
- you are learning browser internals like DOM, CSS cascade, and layout

## When to avoid
- you need a browser for everyday web browsing
- you need full modern CSS, JavaScript, or network support
- you need a production-ready rendering engine

## Facets
- artifact type: application
- maturity: experimental
- function: graphics, parser
- domain: web-development, browser-extensions
- platform: windows, rust, cross-platform
- tags: browser-engine, html, css, layout-engine, opengl, learning-project, rendering-engine, linux, macos

## Member repositories
- twilco/kosmonaut (main) score 56

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:26.470450+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T03:34:14.267867+00:00, confidence not recorded.
  - readme: https://github.com/twilco/kosmonaut (fetched 2026-08-28T04:05:26.470450+00:00, sha 06a813b7eb77)
- Data as of 2026-08-30T08:39:29.467469+00:00.