Ebook

NASA e-Books provides a catalog of electronic books published by the space agency.

Fundamentals of Piano Practice provides free online lessons for learning and teaching piano.

Piktochart turns data into infographics and presentations, with AI-assisted design tools and templates.

Episteme Reader handles documents and ebooks offline on mobile and desktop devices.

ElevenReader reads text, ebooks, PDFs, and audiobooks aloud with text to speech voices.

This online converter turns text and document files into common ebook formats, with more than 15 input types.

FAChords teaches guitar theory with interactive fretboard maps, step-by-step lessons and PDF ebooks.

Metadata2Go shows metadata from audio, video, document, ebook, and image files, and lists tools for editing and removing metadata.

Stitz-Zeager provides free, open precalculus materials covering college algebra, trigonometry, and precalculus.

Audiblez creates audiobook files from EPUB e-books and offers a graphical interface.

Project Gutenberg provides a library of free ebooks and human-read audiobooks, with browsing by category.

Orion's Arm is a collaborative science fiction universe with an encyclopedia and worldbuilding materials.

English e-reader offers graded reader ebooks for English learners and supports reading practice.

The eBook Converter Bot converts ebooks between formats and lists support for 57 input formats.

All My Books helps users catalog printed books, ebooks, and audiobooks and keep track of what they read.

ripgrep-all extends ripgrep-style search to PDFs, e-books, office documents, ZIP files, and other formats.

OneConverter provides conversion tools for work and study, with searchable pages for its available converters.

Search Airiti Library's database of Chinese journals, conference papers, graduate theses, and ebooks from Taiwan and other sources.

Website of the Sigil-Ebook GitHub Organization describing Sigil as an EPUB editor and PageEdit as a companion XHTML editor.

CoverDesignAI creates book-cover concepts from a short description for authors and self-publishers.

Goodreads helps readers discover and track books, with account sign-in options.

Art of Memory teaches techniques including memory palaces, peg lists and spaced repetition, and hosts training games and competitions.

Live Lingua offers four free online Cantonese courses with ebook and audio materials, without requiring sign-up.

Booksie lets writers publish and share novels, short stories, poems, and other writing online.