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Calibre-Web vs KOReader

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

Calibre-WebKOReader
LanguageFluentLua
LicenceGPL-3.0AGPL-3.0
Stars18k30k
Latest0.6.27v2026.07.1
Last push2026-10-032026-10-06
Release cadenceabout 175 days between releasesabout 131 days between releases
Active contributors10 commit authors on the default branch in the last 90 days57 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.

    PartialKOReaderReader for your own DRM-free books that runs on Kindle, Kobo, PocketBook and Android devices; not the Kindle store.