EBOOK for EPOC is an electronic book (e-text/e-book) viewer. It supports the industry standard Palm DOC (Aportis) documents, as used on the Palm handhelds, TCR and regular text documents. Although primarily designed as a book reader EBook may also be used as a general document viewer but it does not support document formats such as EPOC Word, MS Word, HTML or PDF.

A Unicode version of EBook is also available for reading Japanese and Chinese documents. The Unicode version requires Enfour UniFEP v2 or later.

EPOC is the Operating System used by the following Psion/Symbian devices: Series 5/Osaris/Revo/Mako/MC218/Series 5mx/Series 7/netBook.

EBook works on all current EPOC devices.