Sigil, Open Source and Cross Platform WYSIWYG E-Book Editor

Sigil is an open source, multi platform WYSIWYG e-book editor designed for editing e-books in ePub format. The application has an impressive list of features that allows you to do basic as well advanced editing. Sigil also comes with proper documentation.

Sigil 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 in future
• 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

Sigil is gearing towards a version 4.0 release bringing new features, interface improvements and fixes over last the stable release. The current version is 4.0RC1 (released April 22) which is as good as stable. This is a must have application for users who work on editing/writing e-books.

I downloaded 'The Time Machine' by H.G. Wells from Project Gutenberg. Some screenshots of Sigil in different views:

Book View

Split View

Code View

Latest Linux installers can be downloaded form here