Ebook GitHub Repositories (2026) · Open Source Tools

Readest is a modern, feature-rich ebook reader designed for avid readers offering seamless cross-platform access, powerful tools, and an intuitive interface to elevate your reading experience.

A modern ebook manager and reader with sync and backup capacities for Windows, macOS, Linux, Android, iOS and Web

A multi-platform document and e-book reader.

LocalViewer is a fast and full-featured Android SMB/WebDAV/CBZ/RAW photo/comic/ebook viewer and video player with folder and library support.

The official source code repository for the calibre ebook manager

PDF craft can convert PDF files into various other formats. This project will focus on processing PDF files of scanned books.

Calibre-Web but Automated and with tons of New Features! Fully automate and simplify your eBook set up!

A command-line tool for Z-Library. Search, download, send to Kindle, and integrate with AI agents.

Official public Markdeep source archive

An Open source app to download and read books from shadow libraries (Anna’s Archive, libgen, zlib)

:blue_book: Asciidoctor EPUB3 is a set of Asciidoctor extensions for converting AsciiDoc to EPUB3

Offline-first Android reader for BookOrbit, Komga, and Kavita. EPUB, PDF, comics, audiobooks, offline downloads, and reading progress sync.

Self-hosted ebook library server with built-in reader, KOReader sync, OPDS feed, and reading stats. Single Docker image.

Pathagar is a simple bookserver serving OPDS feeds

Send books from your Android phone to KOReader over Wi-Fi. No computer, no cables.

A self-hosted, resource aware file conversion server supporting 490+ formats in 26 languages.