# halfmoonui/halfmoon

Halfmoon is a highly customizable, drop-in Bootstrap replacement. It comes with three built-in core themes, with dark mode support for all themes and components.

Repository: https://github.com/halfmoonui/halfmoon
Canonical: https://ross.abutalabs.com/products/halfmoon
Homepage: https://www.gethalfmoon.com
Language: CSS
License: MIT
License Family: permissive
Topics: css, dark-theme, dark-mode, dashboard, web-framework, halfmoon, css-framework, css-variables, css-custom-properties, bootstrap, bootstrap5
Last push: 2024-12-16T12:21:06+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 2255, "days_push": 625, "days_rel": 729, "gap_med": null, "n_releases_24m": 1}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3114, forks 110 (observed 2026-08-28T04:07:44.068402+00:00)

## What it is
Halfmoon is a highly customizable, drop-in CSS replacement for Bootstrap 5, built with CSS variables and three core themes with dark mode support. It ships no JavaScript of its own, relying entirely on bootstrap.bundle.js so it works with any Bootstrap-compatible component library.

## Use cases
- replace bootstrap css with a more customizable alternative
- add dark mode to a bootstrap-based website
- build a responsive dashboard with a css framework
- create custom themes using css variables
- support rtl layouts in a bootstrap project
- use bootstrap components with react or vue without changing js

## When to choose
- you already use Bootstrap 5 and want a drop-in stylesheet swap with dark mode
- you need deep theming via CSS variables with minimal effort
- you want to keep using bootstrap.bundle.js and existing Bootstrap component libraries

## When to avoid
- you need a framework with its own JavaScript components
- you want utility-first styling like Tailwind
- you don't use Bootstrap and prefer a standalone design system

## Facets
- artifact type: library
- maturity: active
- function: css-framework, ui-components, theme
- domain: web-development, frontend, web-design
- platform: browser
- tags: bootstrap-replacement, dark-mode, css-variables, responsive-design, rtl-support, theming, web-server, nodejs

## Member repositories
- halfmoonui/halfmoon (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:44.068402+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 2026-08-30T07:26:40.846720+00:00, confidence not recorded.
  - readme: https://github.com/halfmoonui/halfmoon (fetched 2026-08-28T04:07:44.068402+00:00, sha f49de851313d)
  - homepage: https://www.gethalfmoon.com (fetched 2026-08-29T09:41:48.160555+00:00, sha afec2d6fe931)
  - site_page: https://www.gethalfmoon.com/docs/introduction (fetched 2026-08-29T09:41:48.169612+00:00, sha 7e0b41876280)
  - site_page: https://www.gethalfmoon.com/docs/download (fetched 2026-08-29T09:41:48.171918+00:00, sha 4356ec2a2f31)
- Data as of 2026-08-30T08:39:29.467469+00:00.