Check out SigilSigil. It's a multi-platform EPUB ebook editor with the following features:
- Online Sigil User's Guide, FAQ, and Wiki documentation
- Free and open source software under GPLv3
- Multi-platform: runs on Windows, Linux and Mac
- Full UTF-8 support
- Full EPUB 2 spec support
- Multiple Views: Book View, Code View and Split View
- WYSIWYG editing in Book View, supporting all XHTML documents under the OPS specification
- 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 15 languages
- Spell checking with default and user configurable dictionaries
- Full Regular Expression (PCRE) support for Find & Replace
- SVG support and basic XPGT support
- Supports import of EPUB and HTML files, images, style sheets, and fonts
- 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
- Native C++ application
Downloads at Sigil's project pageSigil's github page. If you like to be notified of new releasedreleases, there's the development blogSigil website.
