head to head · open source
koreader vs koodo-reader
koreader has 30,818 GitHub stars, 2,019 forks, 1,345 open issues and last shipped yesterday. koodo-reader has 28,699 stars, 2,148 forks, 271 open issues and last shipped 2 days ago. koreader leads on adoption by 7% (30,818 vs 28,699 stars). koreader is written in Lua under AGPL-3.0; koodo-reader is written in JavaScript under AGPL-3.0. koreader has attracted 7% as many forks as stars, koodo-reader 7%. koreader was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 4 topic tags (cbz, ebook, epub, fb2), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| koreader | koodo-reader | |
|---|---|---|
| GitHub stars | ★ 31K | ★ 29K |
| License | AGPL-3.0 | AGPL-3.0 |
| Written in | Lua | JavaScript |
| Last push | 2026-11-02 | 2026-11-01 |
| Forks | ⑂ 2.0K | ⑂ 2.1K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick koreader if
- You weight community size — 31K stars and counting
- You want the AGPL-3.0 license terms
- Your stack matches Lua
- You value the larger contributor base for long-term maintenance
pick koodo-reader if
- You want the koodo-reader feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches JavaScript
- You evaluated both and koodo-reader fits your workflow better
About koreader
KOReader is a document viewer primarily aimed at e ink readers. [![AGPL Licence][badge license]](COPYING) [![Latest release][badge release]][link gh releases] [![Gitter][badge gitter]][link gitter] [![Mobileread][badge mobileread]][link forum] [![Build Status][badge circleci]][link circleci] [![Coverage Status][badge coverage]][link coverage] [![Weblate Status][badge weblate]][link weblate] Download • User guide • Wiki • Developer docs Main features portable : runs on embedded devices (Cervantes, Kindle, Kobo, PocketBook, reMarkable), Android and Linux computers. Developers can run a KOReader emulator in Linux…
read the full koreader overview →
About koodo-reader
简体中文 हिंदी Português Indonesian English Türkçe Koodo Reader A cross platform ebook reader Download Preview Roadmap Document Plugins Preview Features Format support: EPUB ( .epub ) PDF ( .pdf ) DRM free Mobipocket ( .mobi ) and Kindle ( .azw3 , .azw ) Plain text ( .txt ) FictionBook ( .fb2 ) Comic book archive ( .cbr , .cbz , .cbt , .cb7 ) Rich text ( .md , .docx ) HyperText ( .html , .xml , .xhtml , .mhtml , .htm ) Platform support: Windows , macOS , Linux , Android , iOS and Web Sync and backup your data with OneDrive , Google Drive , Dropbox , iCloud , MEGA , pCloud , Yandex Disk , Box , FTP , SFTP , WebDAV…
read the full koodo-reader overview →
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Frequently asked questions
Is koreader or koodo-reader more popular?
koreader has 30,818 GitHub stars and koodo-reader has 28,699. koreader has the larger community by that measure.
Are koreader and koodo-reader free?
Both are open source. koreader is licensed under AGPL-3.0 and koodo-reader under AGPL-3.0. Neither carries a licence fee.
What is the difference between koreader and koodo-reader?
koreader is written in Lua and koodo-reader in JavaScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, koreader or koodo-reader?
Choose koreader if you want the larger community (30,818 stars) or its AGPL-3.0 licence terms. Choose koodo-reader if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.