Alerta
Alerta: A self-hosted alert hub with flexible deduplication, routing, suppression, and plugins. Ranked #21 of 36 in Alert Management Software by our editors (7.3/10); pricing: Open source; best for teams self-hosting monitoring and alert workflows.
At a glance
- Editor score7.3 / 10
- PricingOpen source
- Best forTeams self-hosting monitoring and alert workflows
- Paid fromFree
- Alert deduplicationYes
- Facts checked19 Sep 2026
Where it wins
- Deduplicates alerts by environment, resource, event, and severity
- Configurable rules route alerts to selected plugins
- Blackout periods and plugins support suppression and enrichment
Where it doesn't
- Requires teams to operate their own deployment
- Alert volume and retention depend on deployment configuration
- No built-in AI features
Our verdict on Alerta
Alerta brings alerts from multiple monitoring sources into a central interface, with a RESTful JSON API, web console, and command-line client. It is aimed at teams that operate their own monitoring infrastructure and want control over how alerts are consolidated and handled. Its open-source, self-hosted model suits teams prepared to manage deployment and configuration rather than adopt a hosted alert service.
Alert handling is its main strength. Alerta deduplicates using environment, resource, event, and severity, and can correlate alerts across severity or related events. Blackout periods suppress matching alerts, while pre-receive and post-receive plugin hooks enable enrichment and transformation. Configurable rules route alerts to selected plugins. The web console offers filtering, search, alert actions, and history. Integrations include Prometheus, Grafana, PagerDuty, Nagios, Zabbix, Sensu, Slack, AWS SNS, AMQP, and Twilio, which gives teams options across monitoring, messaging, incident management, and notifications.
The trade-off is operational ownership: deployment can use Python, Docker, PostgreSQL, or MongoDB, and teams must manage their own environment. Alert volume and retention depend on deployment configuration, with history-entry and timeout settings rather than a fixed allowance or period. Role-based access control and API-key access controls provide access-management options. Alerta fits teams that want an adaptable, self-hosted alert pipeline and can maintain it; teams seeking a managed service or fixed hosted allowances should look elsewhere.
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Alerta pricing
Alerta fact sheet
| Free plan | Not verified |
|---|---|
| Paid from | Free |
| Alert deduplication | Yes |
| Routing rules | Yes |
| Alert enrichment | Yes |
| Suppression rules | Yes |
| Included alert volume | Not verified |
| Alert retention | Not verified |
| Deployment | Cloud, Self-hosted |
| Platforms | Web |
| Integrations | 10 integrations: Prometheus, Grafana, PagerDuty, Nagios, Zabbix, Sensu … |
| Pricing | Open source |
| Website | alerta.io |
| Facts checked | 19 Sep 2026 |
Alerta integrations
Alerta lists 10 integrations on its own site.
- Prometheus
- Grafana
- PagerDuty
- Nagios
- Zabbix
- Sensu
- Slack
- AWS SNS
- AMQP
- Twilio
Alternatives to Alerta
- TrueWatch Event ManagementA broad event-management toolkit for teams that need alert context, routing, and suppression.9.4
- ServiceNow Event ManagementA broad event-to-response workflow for organizations running ServiceNow ITOM.9.3
- Splunk IT Service IntelligenceCorrelates and enriches alerts to help teams investigate service-impacting events.9.2
Also Ranked In
Alerta is ranked in 2 of our directories.
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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