KOReader: A Powerful Cross-Platform E-reader

KOReader is a document viewer primarily designed for e-ink readers, supporting numerous formats (PDF, EPUB, MOBI, etc.) and devices (Kindle, Kobo, etc.). It boasts a highly customizable reading view, multilingual support, integration with tools like Calibre, and e-ink optimizations for fast page turns. Extensible via plugins, KOReader is developed and maintained by a global community of volunteers.