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 1.8.0 fixes:

  • Reports now generate properly quoted csv when saved
  • Workaround Bug in QtWebengine when using custom scheme handler and specific audio/video codecs
  • Fix CV -> Preview sync after intial load when Preview Zoom is not equal to 100%
  • Fix link tags with rel set to stylesheets via Mend and Mend and Prettify that are missing type
  • Fix GoToLinkOrStyle to work on css link tags in head
  • Fix logic in GoToLinkOrStyle to better identify the actual target with styles
  • Fix insert media file when cursor at very start of tag
  • Fix Windows and macOS bugs when generating Keyboard Shortcuts
  • Fix insert closing tag when cursor at very start of tag
  • Fix double copy to Clipb

Download: Sigil 1.8.0 (64-bit) | 81.0 MB (Open Source)
Download: Sigil 1.8.0 | 70.5 MB
Links: Sigil Home Page | Other Operating Systems