Sigil is a free, open source, multi-platform ebook editor that uses Qt (and QtWebEngine). It is designed to edit books in ePub format (both ePub 2 and ePub 3).
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PageEditSigil-Ebook
Sigil-Ebook.PageEditv2.7.6
An ePub visual XHTML editor based on Sigil's Deprecated BookView. It uses WebEngine instead of WebKit.
