Overview: eBook reader. Supports epub (non-DRM), fb2, txt, rtf, html, chm, tcr formats.
Pages or scroll view. Page flipping animation.
Table of contents, bookmarks, text search.
Bookmarks on text fragments (comments or corrections) - useful for proof reading.
Export of bookmarks to text file.
Built-in file browser, quick recent books access. Hyphenation dictionaries;
Most complete FB2 format support: styles, tables, footnotes.
Additional fonts support (place .ttf to /sdcard/fonts/)
Day and night profiles (two sets of colors, background, backlight levels).
Brightness adjustments by flick on left edge of screen.
Background texture (stretched or tiled) or solid color.
Paperbook-like page turning animation or "sliding page" animation.
Dictionary support (ColorDict and Fora Dictionary).
Customizable tap zone and key actions.
Can read books from zip archives.
Automatic reformatting of .txt files (autodetect headings etc.)
Styles can be customised in wide range using external CSS.
Select text using double tap (optional).
Similar to FBReader, Aldiko, AlReader, Nook, Laputa, Moon+ reader.
Place additional textures to /sdcard/.cr3/textures/ -- to be used as tiled page backgrounds.
Place additional textures to /sdcard/.cr3/backgrounds/ -- to be used as stretched page backgrounds.
(/cr3/ directory can also be used instead of /.cr3/, and internal SD or internal storage instead of /sdcard/)
CoolReader is free, open source (GPL), multiplatform project.