Sigil
Multi-platform EPUB ebook editor
Sigil is a free, open-source EPUB editor for creating and editing electronic books in the EPUB format. It offers a WYSIWYG interface alongside direct code editing, validation, and metadata management.
Key features
- WYSIWYG and code editing
- EPUB 2 and EPUB 3 support
- Built-in validation
- Metadata editor
Strengths
- Released under the GPL-3.0 license
- Easy to set up — beginner-friendly
- Mature project with 7k GitHub stars
- Written in C++
Sigil replaces
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