# lc-soft/LCUI

C library for building user interfaces

Repository: https://github.com/lc-soft/LCUI
Canonical: https://ross.abutalabs.com/products/lcui
Homepage: https://lcui.dev
Language: C
License: MIT
License Family: permissive
Topics: gui-framework, c, gui-toolkit, cross-platform-gui, windows
Last push: 2026-08-10T14:47:52+00:00

## Health v2 (maintenance only)
Score: 66/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 97, release rhythm 8, longevity 100
- inputs: {"age_days": 5142, "days_push": 23, "days_rel": 600, "gap_med": null, "n_releases_24m": 1}
- flags: prerelease_only
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 4346, forks 371 (observed 2026-08-28T04:08:46.218921+00:00)

## What it is
LCUI is a small C library for building cross-platform graphical user interfaces with fully custom-drawn components and a built-in CSS engine. It integrates web front-end technologies, letting developers write UIs with TypeScript, JSX, React-like components, and stylesheets such as Tailwind CSS and Sass.

## Use cases
- build a desktop GUI application in C
- create cross-platform UIs with CSS styling
- use React-like JSX components in a native desktop app
- build a small lightweight GUI toolkit app without heavy dependencies
- develop a Windows desktop app with web front-end skills
- define UI layouts with XML and style them with CSS

## When to choose
- you know C and web technologies like CSS, HTML, and React
- you need a small, lightweight GUI library with custom-drawn consistent widgets
- you target Windows primarily (also Linux) for desktop applications
- you want DPI-aware UIs that scale on high-resolution screens

## When to avoid
- you need mobile, macOS, or web deployment
- you require a mature ecosystem with extensive third-party widgets and large community
- you want to avoid Node.js and XMake tooling in your build pipeline
- you need accessibility features or complex native platform integration

## Facets
- artifact type: library
- maturity: active
- function: ui-components, css-framework, gui, templating, internationalization
- domain: cross-platform, desktop-applications, web-development, graphics
- platform: windows, c, cross-platform
- tags: gui-toolkit, css-engine, react-like, jsx, xml-ui, dpi-aware, custom-drawn-widgets, xmake, linux, desktop

## Member repositories
- lc-soft/LCUI (main) score 66

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:46.218921+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 2026-08-29T18:21:34.666775+00:00, confidence not recorded.
  - readme: https://github.com/lc-soft/LCUI (fetched 2026-08-28T04:08:46.218921+00:00, sha e1a049a32cb3)
  - homepage: https://lcui.dev (fetched 2026-08-29T09:10:28.537152+00:00, sha 23a6b3c9ff47)
  - site_page: https://lcui.dev/docs/guide/introduction (fetched 2026-08-29T09:10:28.546504+00:00, sha 074f20c2beba)
  - site_page: https://lcui.dev/docs/tutorials/todolist (fetched 2026-08-29T09:10:28.548323+00:00, sha 579ad92f2214)
  - site_page: https://lcui.dev/docs/rfc (fetched 2026-08-29T09:10:28.549918+00:00, sha 971d1a4d36db)
  - site_page: https://lcui.dev/docs/next/guide/introduction (fetched 2026-08-29T09:10:28.551742+00:00, sha d21628bdea7f)
  - site_page: https://lcui.dev/docs/2.x/introduction (fetched 2026-08-29T09:10:28.554544+00:00, sha fc3e575e469d)
  - site_page: https://lcui.dev/docs/guide/quick-start (fetched 2026-08-29T09:10:28.556763+00:00, sha 2a763acb526d)
  - site_page: https://lcui.dev/docs/guide/installation (fetched 2026-08-29T09:10:28.558989+00:00, sha a540c3f05a58)
  - site_page: https://lcui.dev/docs/next/tutorials/todolist (fetched 2026-08-29T09:10:28.560633+00:00, sha 1182e52cc41f)
- Data as of 2026-08-30T08:39:29.467469+00:00.