FBReader (FBReaderJ) is a free ebook reader. Supports epub, rtf, doc (MS Word), html, fb2(.zip), mobi (including non-protected kindle books), and undeniable textual content file codecs.
FBReader is quick, extremely customizable. Can use exterior TrueType/OpenType fonts and customized backgrounds. Screen brightness will also be modified during reading (slide finger up/down alongside the left reveal edge). Supports different day/evening coloration schemes.
Supports YotaPhone Always-On Display functionality (can show textual content on each LCD and eInk displays).
Includes a browser/downloader for community e book catalogs/stores. A couple of in style English, French, Russian, Chinese and Polish libraries are integrated. Customized OPDS catalogs are supported too.
On the other hand you could obtain books manually and put them into /sdcard/Books catalog to your tool.
FBReader is integrated with exterior dictionaries. Supports ColorDict, all Slovoed dictionaries (by Paragon Software), Fora Dictionary, FreeDictionary.org, LEO dictionary.
Localized for 29 languages. Includes hyphenation patterns for 24 languages. Open-source (GPL).
Equivalent purposes: Kindle, Google Books, Aldiko, Cool Reader, Moon+ Reader, Alreader
* Fully compatible with the Bookshelf Plugin