edX vs Princeton Online
| edX | Princeton Online | |
|---|---|---|
| Free plan | Yes | No |
| Free trial | Yes | No |
| Paid from | $12.50/mo | — |
| Open source | No | No |
| Platforms | Android, iOS, Web | Web |
| Free plan | Yes | Yes |
| Completion certificates | — | No |
| Degree programs | — | No |
Both are listed in Best MOOC Platforms. On Inferse, edX scores higher on our published basis.