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OldNYC

OldNYC

Mapping historical photos from the NYPL [Tech]

Education·Launched May 2015·0 upvotes·oldnyc.org

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ALIVEverified Jul 11, 2026 · HTTP 200

CohortClass of 2015

What it is

Mapping historical photos from the NYPL [Tech]

HTTP liveness

9 probes since Jun 16

Jun 16Jul 11

AliveHard-dead (404/5xx/parked)RedirectedUnverified (timeout/DNS/block)

Observed events

probes · press · GitHub

Jun 16, 2026
First probe — live
Alive · 200 OK

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Tags

consumers open source funded students free offline capable open source cloud researchers

Pulse Indexobserved activity

412/4 signal families

Liveness40%

1.00

Press30%

no data

GitHub20%

no data

Tranco10%

0.13

Weighted observed activity · updated Jul 15

Cohort survival · Class of 2015weekly

12,940 products launched in 2015 · 100% still active

12,899 active41 sunset

Still active

100%

Median lifespan

4.9y