Sigil
POPIS:
Sigil is a multi-platform EPUB ebook editor with the following features:
- Free and open source software under GPLv3
- Multi-platform: runs on Windows, Mac, and Linux
- Full UTF-16 support
- EPUB 2 spec support with a lot of EPUB 3 support
- Multiple Views: Code View and Preview View
- Complete control over directly editing EPUB syntax in Code View
- Table of Contents generator with multi-level heading support
- Metadata editor
- 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,
- All imported files can have their formatting mended, and your code can be optionally “prettified>”
- Plugin Support
- Pies and Puppies!