firebug/firebug
Web Development Evolved - The Firebug you have known and loved observed · 2026-08-28
Health v2 · maintenance only
32/100
- Activity 0
- Release rhythm 35
- Longevity 100
Flags: no_releases no_license
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 5837
- days_rel: n/a
- days_push: 2302
- n_releases_24m: 0
Adoption not part of the score
1370 stars · 345 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
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
plugin · maturity abandoned
developer-tools testing web-development browser-extensions developer-tools browser browser-extension firefox-extension devtools debugging html-inspector javascript-debugger discontinued legacy
3 sources
- readme: https://github.com/firebug/firebug · fetched 2026-08-28 · 1320485c0250
- homepage: http://getfirebug.com/ · fetched 2026-08-29 · 85584c4e5f51
- site_page: https://getfirebug.com/releases · fetched 2026-08-29 · 81f69ff2a108
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| firebug/firebug | main | 32 |
For agents
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem