Sigil
Sigil-Ebook (Open-Source-Projekt) · current 2.8.1
The current version of Sigil is 2.8.1 (as of 18/07/2026). patchletter checks the official source daily and emails you new releases.
Sigil at a glance
Sigil is an open source editor for EPUB e-books. Alongside near-WYSIWYG editing it gives direct access to XHTML, CSS and metadata and can validate book structure. In companies and educational institutions it shows up wherever documentation, training material or publications are produced and maintained as EPUB; IT packages and deploys it as an ordinary desktop application for Windows, macOS and Linux.
The project is developed on GitHub and publishes its builds there with signed installers plus an AppImage for Linux. The rhythm is irregular: feature releases are often followed shortly by correction builds that fix problems in the previous one.
When updating, note that Sigil ships its own Qt and Python environment, which also hosts plugins; any plugins in use should be checked for compatibility after an upgrade. Older operating system versions occasionally drop out of support, so workstations on an older platform may have to stay on an earlier build.
Version history & changelog · as detected by patchletter
| Version | Channel | Date | Notes |
|---|---|---|---|
| 2.8.1 | STABLE | 18/07/2026 | Release notes → |
Frequently asked questions
- What is the latest version of Sigil?
- Sigil 2.8.1, released 18/07/2026. patchletter checks the vendor's official source daily for new releases.
- Where can I find the Sigil release notes?
- The version history above links to the vendor's official release notes where the vendor publishes them. patchletter deliberately stores no vendor full texts.
- How do I get notified about new Sigil updates?
- Tick Sigil off in the catalogue and leave your address. From then on new versions go out by email — one at a time, or bundled in the daily or weekly digest.
An email as soon as a new Sigil version ships
We reconcile the vendor source daily. When a new version appears, it lands in your inbox right away or bundled as a digest. The update email is free and ends with one click. Alerts about vulnerabilities and end of support are part of patchletter Pro.
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[](https://patchletter.com/en/software/sigil)https://patchletter.com/badge/sigil.svgAlso available: ?v=eol (end of support) and ?v=cve (actively exploited).
