GoAlert vs PagerTree

GoAlert is free, open-source software for on-call scheduling, alert routing, and escalation. Schedules, rotations, and escalation policies decide who receives an alert and move it onward when it is not acknowledged. Alerts can enter through the generic API, email, Grafana, Prometheus, Site24x7, Sensu, or manual interface entry. Notifications include Twilio SMS and voice, Mailgun email, and Slack. GoAlert is self-hosted, distributed as a single binary or Docker images, and requires a running PostgreSQL instance. Administrators can enable GitHub OAuth or OpenID Connect. The setup guide recommends a data-encryption key for sensitive stored information such as API keys. The interface is responsive and mobile friendly. Two-way SMS is available for US-based numbers; Indian government regulations prevent it for Indian numbers. Rotation scheduling, escalation policies, handoff tools, multichannel notifications, and calendar sync are listed capabilities. The project is licensed under Apache License 2.0.

PagerTree helps teams share on-call responsibility and respond to incidents. Its scheduler supports rotations, overrides, reminders, calendar sync, and public, private, or password-protected schedules. Escalation policies allow unlimited layers, configurable timeouts, repeated alerts up to three times, and reassignment. Notifications can arrive by push, email, SMS, voice, WhatsApp, or Slack. PagerTree can aggregate and deduplicate similar alerts, with aggregation periods configurable from 15 minutes to 30 days. Integration options include email, webhook, and custom webhook. Single sign-on uses SAML 2.0 and supports identity providers such as Azure, Okta, and Google. PagerTree says data is encrypted at rest with AES-256, communications use SSL/HTTPS, and encrypted database backups run hourly. Basic costs nothing for up to five users and two teams, with three months of data retention. Pro is $15 a month per user; Elite is $19 a month per user. SMS and voice coverage varies by country.