[Ken Maltby]

Features listing updated:


KOReader

KOReader is a document viewer application, originally created for Kindle e-ink readers. It currently runs on Kindle 5 (Touch), Kindle Paperwhite, Kobo, Android(2.3+) devicesKobo and Android (2.3+) devices. Developers can also run Koreader emulator for development purpose on desktop PC with Linux or Windows operating system.


KOReader started as the KindlePDFViewer application, but it supports much more formats than PDF now. Among them are DJVU, FB2, EPUB, TXT, CBZ, HTML.


KOReader is a frontend written in Lua and uses the API presented by the koreader-base framework. KOReader implements a GUI and is currently targeted at touch-based devices - for the classic user interface for button-driven e-ink devices (like the Kindle 2, Kindle DX, Kindle 3, Kindle 4) see the KindlePDFviewer legacy project or - especially for the Kindle 4 - have a look at its fork Librerator.


This application is distributed under the GNU AGPL v3 license (read the COPYING file).




Main features for users•supports multi-format documents including: ◦paged fixed-layout formats: PDF, DjVu and CBZ
◦reflowable e-book formats: ePub, fb2, mobi, doc, chm and plain text
◦scanned PDF/DjVu documents can also be reflowed with built-in K2pdfopt

•use StarDict dictionaries / Wikipedia to lookup words
•highlights can be exported to Evernote cloud account
•highly customizable reader view and typeset ◦setting arbitrary page margins / line space
◦choosing external fonts and styles
◦built-in multi-lingual hyphenation dictionaries

•supports adding custom online OPDS catalogs
•calibre integration ◦send ebooks from calibre library to koreader wirelessly
◦browser calibre library and download ebooks via calibre OPDS server

•can share ebooks to other koreader devices wirelessly
•various optimizations for e-ink devices ◦paginated menus without animation
◦adjustable text contrast

•multi-lingual user interface
•online Over-The-Air software update




Highlights for developlers•frontend written in Lua scripting language ◦running on multi-platform with only one code-base maintained
◦developing koreader in any editor without compilation
◦high runtime efficiency by LuaJIT acceleration
◦light-weight widget toolkit for small memory footprint
◦extensible with plugin system

•interfaced backends for documents parsing and rendering ◦high quality document backend libraries like MuPDF, DjvuLibre and Crengine
◦interacting with frontend via LuaJIT FFI for best performence

•in active development ◦contributed by 28 and more developers around the world
◦continuous integration with Travis CI
◦with unit tests and code coverage test
◦automatic release of nightly builds

•free as in free speech ◦licensed under Affero GPL v3
◦all dependencies are free software


Check out the KOReader wiki to learn more about this project.

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Luck;
Ken