Open Textbook Library vs zyBooks
| Open Textbook Library | zyBooks | |
|---|---|---|
| Free plan | Yes | No |
| Free trial | No | Yes |
| Paid from | Free | — |
| Open source | No | No |
| Platforms | api, Web | Android, iOS, Linux, macOS, Web, Windows |
| Free plan | Yes | No |
| Offline access | Yes | — |
| Device support | web_only | web_desktop_mobile |
| Access model | — | subscription |
| Annotation tools | — | Yes |
| Institutional admin | — | Yes |
| Read-aloud support | — | No |
Both are listed in Best Digital Textbook Platforms. On Everything Xiaomi, zyBooks scores higher on our published basis.