µBookLite for Palm OS (3.5+) and Smartphone. It is a simple and lean, yet powerful ebook reader that can read PDB and PRC (not secure) ebook (HTML, TXT and PML). It supports BMP, GIF, PNG and JPG images and offers many customization options including: Hyphenating, Portrait and Landscape display, Choice of font type, color and size, etc.... It Also has a resizable/skinnable User Interface. µBookLite will be improved on a regular basis.
'Coming soon' - interessant...