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Tools of Titans - The Index
The full, comprehensive index for the book by Tim Ferriss [Productivity, Books]
verified Jul 16, 2026 · HTTP 200
CohortClass of 2017What it is
The full, comprehensive index for the book by Tim Ferriss [Productivity, Books]
HTTP liveness
22 probes since Jun 16Jun 16Jul 16
AliveHard-dead (404/5xx/parked)RedirectedUnverified (timeout/DNS/block)
Observed events
probes · press · GitHub- Jun 16, 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%0.84
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