Side by side
FireHydrant vs SIGNL4
Both stand on it alerting software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
FireHydrant combines on-call, incident actions, automation, and retrospectives, with a free plan and a Pro trial. Review the responder and runbook limits, as well as the per-responder annual-billed Pro price, against team needs.
Visit FireHydrant
Choose SIGNL4 if your organization needs incident alerts, on-call response and escalation handling across mobile and connected systems. Starter covers up to five users with push alerts; teams needing text and voice alerts can consider Notify & Connect at $9 per user per month, while other paid editions add scheduling and operations features.
Visit SIGNL4The facts
| FireHydrant | SIGNL4 | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | API, Web | Android, API, iPhone, Web |
| Lowest paid plan | Pro: $25 a month | Notify & Connect: $9 per user a month |
| Plans published | 3 | 4 |
| Maker | Not published | Not published |
| Website | firehydrant.com | signl4.com |
| On it alerting software | #8 of 23 | #12 of 23 |
FireHydrant: what it does well
- Runbooks can create channels, meetings, and Jira tickets.
- Alerts can be managed from Slack or Microsoft Teams.
- Signals supports multiple notification channels.
- Analytics track MTTA, MTTM, and resolution time.
- 14-day Pro trial requires no credit card.
What to know first
- Free plan is limited to 10 responders.
- Free plan includes only two runbooks and three integrations.
- Pro costs $25/mo per responder, billed annually.
- Free plan has no support level listed.
SIGNL4: what it does well
- Free Starter plan supports up to five users.
- Alerts can arrive by push, text, voice and email.
- Event processing can filter noise and deduplicate repeated signals.
- Supports on-call scheduling and escalation policies.
- More than 200 verified and tested third-party integrations are stated.
What to know first
- Commercial subscriptions are only offered to businesses and public institutions.
- Starter supports up to five users and includes push alerts, a native mobile app, ad-hoc duty management, email, webhooks and REST API.
- Text and voice alerts are part of the $9 per user per month plan.
- The trial lasts 30 days.
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