Sigil 2.0.2 - EPUB editor

Sigil

Sigil is a free, open source, multi-platform ebook editor. It is designed to edit books in ePub format (both ePub 2 and ePub 3). It also provides features for advanced users, like direct XHTML, CSS and XPGT editing. You can use it to add any of the metadata entries supported by the EPUB specification and create a hierarchical Table of Contents.

Sigil key features:

Free and open source software under GPLv3
Multi-platform: runs on Windows, Mac, and Linux (note Linux only receives limited support)
Full UTF-16 support
EPUB 2 spec support with limited EPUB 3 support
Multiple Views: Book View, Code View and Preview View
WYSIWYG editing in Book View
Complete control over directly editing EPUB syntax in Code View
Table of Contents generator with multi-level heading support
Metadata editor
User interface translated into many languages
Spell checking with default and user configurable dictionaries
Full Regular Expression (PCRE) support for Find & Replace
Supports import of EPUB and HTML files, images, and style sheets,
Documents can be validated for EPUB compliance with the integrated
All imported files have their formatting corrected, and your editing can be optionally cleaned
Plugins!

Sigil 2.0.2 changelog:

fix incorrect clip tool button insertion point due to null activeWindow value
fix Windows multiple screen issues when not properly identified (Qt6.5.2 patch fix)
fix Mac Accessibility related crashes when using non-native QFileDialog (Qt 6.5.2 patch fix)
workaround MacOS QMessageBox loss of focus Qt 6.5.X bug without hurting other platforms
fix pretty print mend not formatting mathml
fix Accessibility related crashes in QFontComboBox (Qt 6.5.2 patch fix)
prevent crashing if user mistakenly tries to delete entire ncx in CodeView
harden delete unused styles to trailing whitespace in class names
fix unrecognized media-types application/xml and text/xml
fix cursor just before end tag bug in align justify, centre, right
fix crash when all metadata removed by user in MetaEditor
fix macOS min in Info.plist to be the actual 11.0
update Windows and macOS installers to use Qt6.5.3