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Firebug 2.0 (for Firefox)

Firebug 2.0 (for Firefox)

The most popular and powerful web development tool [Browser Extensions, Developer Tools, Tech]

Developer Tools·Launched Jun 2014·0 upvotes·getfirebug.com
▲Upvote0Visit Website↗
ALIVEverified Jul 12, 2026 · HTTP 200
CohortClass of 2014

What it is

The most popular and powerful web development tool [Browser Extensions, Developer Tools, Tech]

HTTP liveness

9 probes since Jun 16
Jun 16Jul 12
AliveHard-dead (404/5xx/parked)RedirectedUnverified (timeout/DNS/block)

Observed events

probes · press · GitHub
  1. Jun 16, 2026
    First probe — live
    Alive · 200 OK

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VitalsQuiet
Upvotes
—
Press
—
Tags
Pulse Indexobserved activity
482/4 signal families
Liveness40%
1.00
Press30%
no data
GitHub20%
no data
Tranco10%
0.82

Weighted observed activity · updated Jul 15

Cohort survival · Class of 2014weekly

10,235 products launched in 2014 · 99% still active

10,131 active104 sunset
Still active
99%
Median lifespan
4.9y