No. 12 of 30 ·Alert Management Software

Alerta

Web · Linux · Self-hosted · API

Visit site Alternatives

Freedom report

One barScore 5.5

Free tierNo free tier on record
Open codeNo open-source code on record
Runs widely2 of 6 device platforms
DocumentedPlans, terms and facts published

Alerta is ranked #12 of 30 in alert management software on Freedom251. It runs on API, Linux, Self-hosted, Web.

Compared on alert management software

Alert deduplication: Yes
Routing rules: Yes
Alert enrichment: Yes
Suppression rules: Yes

Best Alerta alternatives

See all 12

Two bars Grafana Cloud Application Observability Free tier No. 1$0.03/mo6.7 Two bars Wazuh Free tier No. 2$571/mo6.7 Two bars PagerDuty Free tier No. 3$233.33/mo6.6 Two bars Prometheus Free tier No. 4Free6.6 Two bars TrueWatch Log Management Free tier No. 5$0.11/mo6.6 Two bars AlertOps Free tier No. 6$8/mo6.5

The record

Purpose: Alerta receives monitoring alerts, correlates, de-duplicates or suppresses them, and makes them available through a RESTful JSON API.
Web console: The web console displays alerts and is optimized for desktop, tablet and mobile.
Alert format: Alerts are submitted in JSON format to an HTTP API, and alerts can also be queried from the command line.
Alert customization: Alerts can include multiple services, tags in any format, and custom attributes.
De-duplication: Alerts with the same environment, resource and event are de-duplicated when received with the same severity.
Integrations: Built-in webhooks include AWS CloudWatch, Grafana, Graylog, New Relic, PagerDuty, Pingdom, Prometheus Alertmanager, Slack, Google Stackdriver and Telegram.
Monitoring sources: The homepage lists integrations for Prometheus, Riemann, Nagios, Zabbix, netdata, Sensu, Pingdom and CloudWatch.
Extensibility: Python plugins can extend Alerta without modifying its core source code.
Authentication: Alerta supports Basic Auth, LDAP, OpenID Connect, SAML 2.0, OAuth2, CAS, API keys and HMAC authentication.
Security configuration: Authentication is disabled by default, and the documentation advises enabling it and using HTTPS/SSL when the web UI is publicly accessible.
Customer views: A single Alerta instance can separate alerts by customer so customers can only see and action their own alerts while administrators can see all customers’ alerts.
Deployment: The homepage lists deployment options including AWS EC2, Vagrant, Kubernetes, Packer, Docker and Heroku.
Docker: The official Docker image includes the API server, web UI, housekeeping, plugins, webhooks and authentication providers.
Support: The documentation directs users needing tutorial help to post a question on Slack.

Where it ranks on Freedom251

Best Alert Management Software in 2026#12 of 30

Is Alerta yours?

Claim it for free: prove the domain, then correct facts, plans and screenshots. An editor reviews every change.

Claim it free Promote Alerta

Sources

docs.alerta.io/server.html· checked 2 Oct 2026
alerta.io· checked 2 Oct 2026
docs.alerta.io/integrations.html· checked 2 Oct 2026
docs.alerta.io/gettingstarted/tutorial-3-plugins.html· checked 2 Oct 2026
docs.alerta.io/authentication.html· checked 2 Oct 2026
docs.alerta.io/deployment.html· checked 2 Oct 2026
docs.alerta.io/gettingstarted/tutorial-10-docker.html· checked 2 Oct 2026
docs.alerta.io/tutorials.html· checked 2 Oct 2026
docs.alerta.io· checked 3 Oct 2026