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Sigil

Sigil is a free, open-source education and reference app for Windows, macOS and Linux. Sigil is a multi-platform EPUB ebook editor. It has 7,002 GitHub stars and is released under the GPL-3.0 license. Its source code is on GitHub at Sigil-Ebook/Sigil.

github.com/Sigil-Ebook/Sigil (opens in a new tab)

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About Sigil

Sigil is a free, open source, multi-platform ebook editor that uses Qt6 (and QtWebEngine). It is designed to edit books in ePub format (both ePub 2 and ePub 3).

Install Sigil

Package names found in the project's README. Each links to its package page so you can check the publisher first.

winget (Windows)
winget install Sigil-Ebook.Sigil

Package page (opens in a new tab)

Chocolatey (Windows)
choco install sigil

Package page (opens in a new tab)

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FAQ

Sigil FAQ

Still curious? Email info@appsgit.com.

Is Sigil free and open source?

Yes. Sigil's source code is public on GitHub under the GPL-3.0 license, which is OSI-approved or FSF-free, so you can use, copy and change it for free.

How do I install Sigil?

winget: winget install Sigil-Ebook.Sigil and Chocolatey: choco install sigil. The commands are on this page. Installers are also on its GitHub Releases page (latest: 2.8.1).

Is Sigil still maintained?

The repository's most recent commit was on Oct 26, 2026. appsgit only lists apps whose repository had a commit in the last six months.