# firebug/firebug

Web Development Evolved - The Firebug you have known and loved

Repository: https://github.com/firebug/firebug
Canonical: https://ross.abutalabs.com/products/firebug
Homepage: http://getfirebug.com/
Language: JavaScript
License Family: other
Last push: 2020-05-14T07:20:23+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 5837, "days_push": 2302, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1370, forks 345 (observed 2026-08-28T04:04:31.903665+00:00)

## What it is
Firebug was a legendary Firefox extension for web development that integrated HTML inspection, CSS editing, and JavaScript debugging directly in the browser. It was discontinued in 2017 when Firefox Quantum dropped old-style extensions, and its work continues in Firefox Developer Tools.

## Use cases
- inspect and edit HTML and CSS live in the browser
- debug JavaScript in Firefox
- monitor network requests while developing a website
- profile page performance in the browser
- study the source of a pioneering web development tool
- maintain a legacy Firefox codebase that still uses old-style extensions

## When to choose
- you need to debug web pages in a legacy version of Firefox that supports old-style extensions
- you want to study or fork a historically significant browser debugging tool
- you maintain an environment locked to pre-Quantum Firefox

## When to avoid
- you want modern browser devtools - use Firefox Developer Tools or Chrome DevTools instead
- you run a current version of Firefox, where Firebug no longer works
- you need a maintained or supported tool for active development

## Facets
- artifact type: plugin
- maturity: abandoned
- function: developer-tools, testing
- domain: web-development, browser-extensions, developer-tools
- platform: browser, browser-extension
- tags: firefox-extension, devtools, debugging, html-inspector, javascript-debugger, discontinued, legacy

## Member repositories
- firebug/firebug (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:31.903665+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 2026-08-30T04:40:55.063290+00:00, confidence not recorded.
  - readme: https://github.com/firebug/firebug (fetched 2026-08-28T04:04:31.903665+00:00, sha 1320485c0250)
  - homepage: http://getfirebug.com/ (fetched 2026-08-29T11:58:02.040823+00:00, sha 85584c4e5f51)
  - site_page: https://getfirebug.com/releases (fetched 2026-08-29T11:58:02.043480+00:00, sha 81f69ff2a108)
- Data as of 2026-08-30T08:39:29.467469+00:00.