Sigil-Ebook/Sigil
Sigil is a multi-platform EPUB ebook editor observed · 2026-08-28
Health v2 · maintenance only
93/100
- Activity 99
- Release rhythm 81
- Longevity 100
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-02. Adoption (stars, forks) is never an input.
- gap_med: 49.5
- age_days: 4735
- days_rel: 46
- days_push: 10
- n_releases_24m: 13
Adoption not part of the score
6936 stars · 624 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded
Sigil is a free, open-source, multi-platform EPUB ebook editor built with Qt6 and QtWebEngine. It supports editing both ePub 2 and ePub 3 books with a plugin system and embedded Python.
Use cases
- edit epub ebooks
- fix formatting in an epub file
- convert manuscripts into epub format
- clean up and validate epub 3 books
- extend ebook editing with python plugins
When to choose
- you need a dedicated GUI editor for EPUB 2/3 files
- you want a free open-source alternative to commercial ebook editors
- you need cross-platform ebook editing on Linux, macOS, or Windows
When to avoid
- you need to edit formats other than EPUB, such as MOBI or PDF
- you want fully automated bulk ebook conversion rather than hands-on editing
- you need a headless or command-line-only tool
Facets
application · maturity active
editor gui file-system files desktop-applications developer-tools cross-platform windows cross-platform epub ebook-editor qt6 publishing linux macos desktop
1 source
- readme: https://github.com/Sigil-Ebook/Sigil · fetched 2026-08-28 · 205bf23a37b6
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| Sigil-Ebook/Sigil | main | 93 |
For agents
markdown · JSON · MCP: product_card(name="Sigil-Ebook/Sigil")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem