Open Source C++ eBook Management Software

Sigil is a free, open-source EPUB editor designed for creating, modifying, and formatting digital books. It supports EPUB 2 and EPUB 3 standards, making it suitable for authors, publishers, and e-book developers. The application provides both visual editing and direct access to XHTML and CSS source code. Users can organize chapters, images, stylesheets, and other publication resources through an integrated file browser. Sigil includes tools for editing metadata, generating tables of contents, and checking EPUB structure. Its plugin architecture allows additional functionality through Python-based extensions. Built with Qt, Sigil runs on Windows, macOS, and Linux and provides a comprehensive environment for producing professional digital publications.

calibre - Ebook management

A clean and powerful way to read and manage your e-books on any device. Create your own personalized online library that you can access from any device, anytime, anywhere. Librum automatically saves everything you need to the cloud. Focus on what actually matters, using a simple and straight forward interface. Librum works out of the box, everywhere and at any time. Organize your library the way you want it to be using Librum's organization features. Add your books to collections, tag them, and sort them in any way you want.

Librum is an application designed to make reading enjoyable and straightforward for everyone. It's not just an e-book reader. With Librum, you can manage your own online library and access it from any device anytime, anywhere. It has features like note-taking, bookmarking, and highlighting, while offering customization to make it as personal as you want! Librum also provides free access to over 70,000 books and personal reading statistics while being free and completely open source.