OpenStax vs Top Hat
| OpenStax | Top Hat | |
|---|---|---|
| Free plan | Yes | No |
| Free trial | Yes | Yes |
| Paid from | Free | $35/mo |
| Open source | No | No |
| Platforms | Android, iOS, Web | Android, iOS, Web |
| Free plan | Yes | — |
| Access model | mixed | — |
| Offline access | Yes | — |
| Annotation tools | Yes | — |
| Device support | web_desktop_mobile | — |
| Read-aloud support | Yes | — |
| Paid from | — | 35 /mo |
Both are listed in Best Digital Textbook Platforms. On Freedom251, OpenStax scores higher on our published basis.