Emeritus vs Zerra
| Emeritus | Zerra | |
|---|---|---|
| Platforms | Web, iOS, Android | Web |
| Free plan | Yes | Yes |
| Subscription access | Yes | |
| Mobile apps | both | |
| Offline access | No | |
| Course certificates | Yes | Yes |
| Business plans | Yes | Yes |
| Course formats | mixed | video |
Listed together in Best Online Course Marketplaces