Book Reader
FLOSS book reader with a simple UI. Based on FBReader. Supported formats: fb2, html, txt, epub, mobi, rtf, doc, pdf, djvu. Available on F-Droid: https://f-droid.org/en/packages/com.github.axet.bookreader/
calibre
Cool Reader
Cool Reader is fast and small cross-platform XML/CSS based eBook reader for desktops and handheld devices. Understands a numbe ...
EPUBReader
EPUBReader is a Firefox addon which lets you read ePub-files just in the browser. You don't need to install additional softwar ...
moon-reader
ReadEra
ReadEra - reading books and viewing documents. The app is completely free and contains no ads. Open and read book files in EPU ...
FBReader
FBReader is an e-book reader for various platforms.
Features: Supported e-book formats are: ePub, an international e-publish ...