| Price from | $162.50/mo | — |
| Free plan | — | — |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | Yes |
| iOS | Yes | — |
| Android | Yes | — |
| API | Yes | Yes |
| Self-hosted | — | Yes |
| Plans published | 4 | 0 |
| Spec score · Mass Notification Software | 8.0 (#4) | 6.9 (#29) |
| Integrations | The maker lists Microsoft Teams, Slack, Facebook, Twitter, and Amazon Alexa, and says corporate-system integrations can include GIS, incident management, directories, and reporting. | OpenEWS says its API supports integration with external systems and follows the JSON:API standard. |
| Purpose | Alertable sends phone calls, email and text messages, notifies apps, and posts to social media and websites. | OpenEWS is designed for alerting authorities to send warnings during natural disasters or public health emergencies. |
| Support | The maker advertises 24/7 help, training, resources, and process outsourcing; plan support channels vary by subscription. | The repository directs users with issues to open a GitHub issue or discussion. |
