OnPage vs Open Paging Server
| OnPage | Open Paging Server | |
|---|---|---|
| Free plan | No | Yes |
| Free trial | No | No |
| Paid from | — | Free |
| Open source | No | No |
| Platforms | Web, iOS, Android | Linux, self-hosted, Web |
| Free plan | No | Yes |
Both are listed in Best Mass Notification Software. On Freedom251, Open Paging Server scores higher on our published basis.