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WhatRuns
Discover what runs a website in one click 🖥️ 🔍 — https://www
verified Jul 15, 2026 · HTTP 200
CohortClass of 2017What it is
Discover what runs a website in one click 🖥️ 🔍 — https://www.whatruns.com/ is a free technology lookup tool for developers, designers and salespeople to discover the technologies used on any website. Available for free on https://chrome.google.com/webstore/detail/whatruns/cmkdbmfndkfgebldhnkbfhlneefdaaip?hl=en-US and https://addons.mozilla.org/en-US/firefox/addon/whatruns/. [Web App, Design Tools, Productivity]
HTTP liveness
29 probes since May 23May 23Jul 15
AliveHard-dead (404/5xx/parked)RedirectedUnverified (timeout/DNS/block)
Observed events
probes · press · GitHub- May 23, 2026First probe — liveAlive · 200 OK
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Pulse Indexobserved activity
482/4 signal families
Liveness40%1.00
Press30%no data
GitHub20%no data
Tranco10%0.76
Weighted observed activity · updated Jul 15
Cohort survival · Class of 2017weekly
13,497 products launched in 2017 · 100% still active
13,462 active35 sunset
Still active
100%
Median lifespan
4.9y