OpenStax vs TESSA OER
| OpenStax | TESSA OER | |
|---|---|---|
| Free plan | Yes | Yes |
| Free trial | Yes | No |
| Paid from | Free | Free |
| Open source | No | No |
| Platforms | Android, iOS, Web | Web |
| Free plan | Yes | Yes |
| Remix and adaptation | — | Yes |
| Content review | — | Yes |
Both are listed in Best Open Educational Resource Platforms. On Inferse, OpenStax scores higher on our published basis.