Sigil

Sigil is an open-source ebook editor that allows users to create and modify EPUB files. It offers a user-friendly interface and a variety of features for both beginners and advanced users.

Key Features

• WYSIWYG editing interface for easy content creation
• Supports multiple formats and character sets
• Integrated spell checker and metadata editor
• Customizable styles and formatting options
• Supports table of contents generation
• Multi-platform support (Windows, macOS, Linux)

Pros

• Completely free without hidden costs
• User-friendly interface suitable for all skill levels
• Active community support for troubleshooting
• Regular updates and improvements from developers

Cons

• Limited support for non-EPUB formats
• Learning curve for advanced features
• Occasional bugs may affect performance
• Export options may lack some advanced configurations