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Externals.io
Opening PHP's #internals mailing list to the outside
verified Jul 13, 2026 · HTTP 200
CohortClass of 2017What it is
Opening PHP's #internals mailing list to the outside. — Externals.io is a modern interface to read PHP's #internals mailing list. It features thread views, search and voting as well as keeping track of what you have already read. [Developer Tools]
HTTP liveness
12 probes since Jun 12Jun 12Jul 13
AliveHard-dead (404/5xx/parked)RedirectedUnverified (timeout/DNS/block)
Observed events
probes · press · GitHub- Jun 12, 2026First probe — liveAlive · 200 OK
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Pulse Indexobserved activity
422/4 signal families
Liveness40%1.00
Press30%no data
GitHub20%no data
Tranco10%0.24
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