Interactive Textbooks Digital Library vs zyBooks

Interactive Textbooks Digital Library is a free web and iOS repository for Greek schoolbooks and related educational material. It serves teachers, students, parents, guardians, and other interested users. Coverage spans primary school, gymnasium, general lyceum, and vocational lyceum (EPAL). Books are provided in PDF and HTML, with selected titles in interactive HTML, iBook, and low-vision formats. The library states that more than 160 interactive books include links to simulations, experiments, exercises, educational games, videos, maps, and visualizations from Photodentro repositories. Users can search keywords, including words inside book text, browse by class or subject, and filter by education level, class, book type, and subject. Some editions provide 18–38 point text. Materials can be copied, printed, downloaded, stored locally, and viewed on a computer. Course pages include descriptions, objectives, curricula, and grouped books, while guides support teachers and parents. The library is powered by DSpace and maintained with Ministry of Education funding.

zyBooks is interactive digital courseware designed as an alternative to textbooks in STEM courses. Instructors can add custom content, create sections and chapters, and set course content and pacing. LMS integration is optional: zyBooks supports LTI 1.3 single sign-on and grade passback, with documentation for Canvas, Blackboard, Brightspace, and Moodle; activity scores can also be downloaded as CSV files. Security course materials include labs for practicing malware creation, network analysis, and vulnerability assessment. The maker describes accessibility against WCAG 2.2 A/AA, Revised Section 508, and EN 301 549, and offers accessibility modes and chapter PDFs. Access is by paid subscription, with a free evaluation available to instructors.