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.
With MajiX you can automatically transform RTF files (Microsoft Word files) in XML. MajiX is Java compliant. You can convert Headings, lists (numbered or not), tables, bold, italics, underline and some more.