(December 26, 2021) EPUBTools version 0.8 has been released, in conjunction with release of AkashaRender 0.8. All prior versions of EPUBTools have been deprecated, and are no longer supported.
(November 19, 2021) EPUBTools is an application which helps you build EPUB eBooks. It has been under development for several years, with many changes coming from experience in using this tool to format several books. It is now easy to use, and competently produces EPUB's that pass the checks in EPUBCheck.