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BuilderBook

BuilderBook

The handbook for young people entering tech

Startup Books·Launched Jan 2023·0 upvotes·book.buildergroop.com
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ALIVEverified Aug 27, 2026 · HTTP 200
CohortClass of 2023

What it is

The handbook for young people entering tech

HTTP liveness

5 probes since Aug 19
Aug 19Aug 27
AliveHard-dead (404/5xx/parked)RedirectedUnverified (timeout/DNS/block)

Observed events

probes · press · GitHub
  1. Aug 19, 2026
    First probe — live
    Alive · 200 OK

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Vitals
Upvotes
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Press
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Tags
Pulse Indexobserved activity
5 probes0 pressGitHub –Tranco –

Not enough observed signals for a Pulse Index (needs 2+ signal families).

Cohort survival · Class of 2023weekly

3,422 products launched in 2023 · 100% still active

3,422 active0 sunset
Still active
100%
Median lifespan
4.9y