Polka

Self-hosted e-book library with a web reader and OPDS support

PlatformWebfreeglobal

Polka is a free, open-source, self-hosted e-book library. Point it at a folder of books or import a large .inpx catalog, and it provides a fast, private, polished web reader with OPDS support, positioned as a lighter alternative to Calibre-Web.

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Problem & pain-point mapping
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What it's a strong alternative to
Trust & credibility signals

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