# KOReader: Open-Source E-Book Reader Application

KOReader is an open-source e-book reader that supports multiple formats, including PDF and EPUB. It offers extensive customization and a distraction-free reading experience. This matters because it provides a free, community-driven alternative to proprietary e-reader software.

**Importance:** 2/5

## Sources

### Technology
- [Hacker News](https://koreader.rocks/) — Wed, 29 Jul 2026 11:05:08 +0000