Sigil

WYSIWYG and code-view EPUB ebook editor

★ Stars7k6,997 on GitHub

Last commit3 days ago16 Oct 2026

LicenceGPL-3.0SPDX, from the repository

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From GitHub, fetched 19 Oct 2026.

Visit sigil-ebook.com ↗

Sigil is a free multi-platform EPUB editor for polishing ebook files: code view, WYSIWYG, validation and table of contents tools. Often used after Calibre conversion.

Free alternative to

In collections

Details

Status	Open source
Licence	GPL-3.0
Platforms	Windows, macOS, Linux
Category	Formatting & publishing
Website	sigil-ebook.com
Source	GitHub

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