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SIGNL4PagerTree
Paid

Commercial subscription service; see the SIGNL4 website for plans.

 Paid

Subscription service; plans are listed on its pricing page.

Android, iOS, Web Android, iOS, Web
  • Alerts by push, text, voice and email with escalation
  • On-call scheduling and call routing in one service
  • On-call schedules with escalation layers
  • Notifications by push, email, SMS, voice and chat
  • Hosted commercial service rather than self-hosted software
  • Aimed at teams and organisations, not individuals
  • Hosted service only, with no self-hosted option
  • Aimed at teams rather than individuals
Downloadable app, Hosted service Downloadable app, Hosted service
Closed source Closed source
License not stated License not stated
Account needed Account needed
Not stated if it works offline Needs internet

Checked October 1, 2026

Checked September 24, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.