Sigil is an ePub ebook editor with support for both WYSIWYG word processor style and direct code editing.

Features

• Online Sigil User's Guide, and Wiki documentation
• Full UTF-16 support
• Full EPUB 2 spec support, Limited EPUB 3 support
• Multiple Views: Book View, Code View and Preview View
• WYSIWYG editing in Book View
• Complete control over directly editing EPUB syntax in Code View
• Table of Contents generator with multi-level heading support
• Metadata editor with full support for all possible metadata entries (more than 200) with full descriptions for each
• User interface translated into many languages
• Spell checking with default and user configurable dictionaries
• Full Regular Expression (PCRE) support for Find & Replace
• Supports import of EPUB and HTML files, images, and style sheets,
• Documents can be validated for EPUB compliance with the integrated FlightCrew EPUB validator
• Embedded HTML Tidy: all imported files have their formatting corrected, and your editing can be optionally cleaned