CoolReader is fast and small cross-platform XML/CSS based eBook 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.
JHOVE provides functions to perform format-specific identification, validation, and characterization of digital objects. JHOVE should not be confused with JHOVE2, a product with similar aims but a completely separate code base.