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Calibre-Web vs Librum

The same facts for both, read from GitHub every night, and the relation a person reviewed.

Calibre-WebLibrum
LanguageFluentC++
LicenceGPL-3.0GPL-3.0
Stars18k5.3k
Latest0.6.27v.0.12.2
Last push2026-10-032026-04-26
Release cadenceabout 175 days between releasesabout 29 days between releases
Active contributors10 commit authors on the default branch in the last 90 days0 commit authors on the default branch in the last 90 days
Flagsnonenone

How they relate

  • Both replace Amazon Kindle. Alternatives to Amazon Kindle →

    PartialCalibre-WebThe cloud library for your own DRM-free books, synced to Kobo devices or sent to a Kindle by email, not the store.

    PartialLibrumLibrary and reader for your own books with cloud sync; there is no store.