Products/Productivity/Calibre eBook ManagerQuietVC Report ↗

Calibre eBook Manager

Calibre eBook Manager

Convert any eBook to any format (free and open source) [Tech]

Productivity·Launched Jul 2014·0 upvotes·calibre-ebook.com

▲Upvote0 Visit Website↗

ALIVEverified Jul 15, 2026 · HTTP 200

CohortClass of 2014

What it is

Convert any eBook to any format (free and open source) [Tech]

HTTP liveness

19 probes since Jun 16

Jun 16Jul 15

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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Upvotes

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Press

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Tags

consumers open source funded free pdf creators desktop app offline capable open source

Pulse Indexobserved activity

492/4 signal families

Liveness40%

1.00

Press30%

no data

GitHub20%

no data

Tranco10%

0.90

Weighted observed activity · updated Jul 15

Cohort survival · Class of 2014weekly

10,235 products launched in 2014 · 99% still active

10,131 active104 sunset

Still active

99%

Median lifespan

4.9y