Documents can be validated for EPUB compliance with the integrated FlightCrew EPUB validator.Supports import of EPUB and HTML files, images, and style sheets,.Full Regular Expression (PCRE) support for Find & Replace.Spell checking with default and user configurable dictionaries.User interface translated into many languages.

Metadata editor with full support for all possible metadata entries (more than 200) with full descriptions for each.

Table of Contents generator with multi-level heading support.

Complete control over directly editing EPUB syntax in Code View.

Multiple Views: Book View, Code View and Preview View.

Online Sigil User's Guide, and Wiki documentation.

Update automatically or install from the portable app store in the Platform. And it's open source and completely free. It's packaged in Format so it can easily integrate with the Platform. Sigil is an ePub ebook editor with support for both WYSIWYG word processor style and direct code editing.

A new version of Sigil Portable has been released.

For ipod download Sigil 2.0.1