Cool Reader
Website: https://sourceforge.net/projects/crengine/
Support: buggins@fromru.com
OS: Android
Price: 0
CoolReader is fast and small cross-platform XML/CSS based E-Book reader for desktops and handheld devices.
Supported formats: FB2, TXT, RTF, DOC, TCR, HTML, EPUB, CHM, PDB, MOBI. Platforms: Win32, Linux, Android. Ported on some eInk based devices.