Sigil

Sigil is a multi-platform WYSIWYG ebook editor. It is designed to edit books in ePub format.

Features:

• Free and open source software under GPLv3
• Multi-platform: runs on Windows, Linux and Mac
• Full Unicode support: everything you see in Sigil is in UTF-16
• Full EPUB spec support
• WYSIWYG editing
• Multiple Views: Book View, Code View and Split View
• Metadata editor with full support for all possible metadata entries (more than 200) with full descriptions for each
• Table Of Contents editor
• Multi-level TOC support
• Book View fully supports the display of any XHTML document possible under the OPS spec
• SVG support
• Basic XPGT support
• Advanced automatic conversion of all imported documents to Unicode
• Currently imports TXT, HTML and EPUB files; more will be added with time
• Currently exports EPUB and SGF (Sigil native format); more will be added with time
• Embedded HTML Tidy; all imported documents are thoroughly cleaned; changing views cleans the document so no matter how much you screw up your code, it will fix it (usually)
• An actually usable user interface
• Native C++ application

• 10.9.5 is now the minimum OS X version required. Only 10.10.1 has been tested.
• DCODE_SIGN_ID=XYZ option has been added to auto sign the app bundle on OS X.
• Validation result plugins will auto close the Plugin Runner Dialog since the dialog has no real info and openes the validation pane with the results anyway.
• New Plugin Preferences Support added
• Plugins Manager will now remember last folder used
• Support for building both Linux .deb and .rpm packages
• Lots of Linux build support, compilation, installation, and documentation improvements
• Qt 5.4 is now a minimum requirement.
• Build changes to support update to latest Qt 5.4.0 and to use latest C++11 compiler
• Numerous bugs fixed or worked around including:
  • Make Invocation of CSS W3C Online Validator more reliable
  • Fix to make Preview Window update after BookView to prevent memory corruption and crashes
  • Workaround Qt bug (font cache assertion) when using clearMemoryCaches() - see https://bugreports.qt.io/browse/QTBUG-43504
  • Properly handle loadFinsihed Signal in BookViewPreview to prevent clashes between BookView and Preview
  • Fix for Sigil memory use after it was freed bug
  • Workaround to the extent possible Qt bug with memory use after free using QWebInspectors - see https://bugreports.qt.io/browse/QTBUG-43725
  • Workaround to the extent possible Qt bug with memory use after free when closing MainWindows - see https://bugreports.qt.io/browse/QTBUG-43692
  • Bug fix to prevent crashes in KeyboardsShortcuts when accessing Preferences with multiple MainWindows