Best Digital Textbook Platforms in 2026
Updated
28 digital textbook platforms ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
28ranked
1free plans on this page
7 Oct 2026last checked
Digital Textbook Platforms, one module each. A lit port is something its maker publishes; 0 of the 3 on this page have a public API.
- 26 zyBooks API not on recordOSS not on recordFREE not on recordDOCS 5.0
- 27 CK-12 FlexBook 2.0 API not on recordOSS not on recordFREE not on recordDOCS 4.9Free
- 28 Kotobee Author API not on recordOSS not on recordFREE not on recordDOCS 4.8
Compare all 3 in a table
| # | Platform | Score | Free plan | From | Free plan | Paid from | Access model | Offline access |
|---|---|---|---|---|---|---|---|---|
| 26 | zyBooks | 5.0 | No | — | No | — | subscription | — |
| 27 | CK-12 FlexBook 2.0 | 4.9 | Free plan | Free | Yes | — | — | — |
| 28 | Kotobee Author | 4.8 | No | — | Yes | — | — | — |