What is Alerta used for?

Alerta is a monitoring tool that consolidates alerts from any source into one scalable server with a web console for at-a-glance views and drill-down. It is a good fit for consolidating alerts from several monitoring tools and operations teams wanting one alert dashboard.

Is Alerta open source?

Yes. Alerta is open source under the Apache-2.0 licence. Its source code is on GitHub at alerta/alerta and is written mainly in Python.

Yes. Alerta is open source, so the software itself is free to use.

Can I self-host Alerta?

Yes. Alerta can be self-hosted on your own server or infrastructure.

What is Alerta an alternative to?

Alerta is an open-source alternative to BigPanda, PagerDuty and xMatters. Other open-source alternatives to BigPanda include Keep.

Is Alerta actively maintained?

The most recent commit to Alerta was on 19 June 2026, and the latest release is v9.1.0, published on 28 March 2026. The project has 2.5k stars on GitHub.

Alerta: open-source alternative to BigPanda, PagerDuty

About Alerta

Alerta is an alert aggregation and monitoring system. Its design goals are to be distributed and decoupled so it scales, to need minimal configuration while accepting alerts from any source, and to give a quick visual overview with the option to drill down into detail.

The server is a Python application that needs MongoDB or PostgreSQL as its only mandatory dependency; release 9 requires Python 3.9 or newer, PostgreSQL 13 or better, or MongoDB 6.0 or better. You install the server and command-line client with pip and start it with alertad, then add the web console from a release archive. Settings are overridden in a config file or through an environment variable, and Docker images are provided in a separate repository.

Alerta exposes an API server, which is how monitoring tools feed alerts in and how the web console and client read them. The project has been developed since 2012 and is licensed under Apache-2.0.

Key features

Alert intake from any monitoring source
Web console with drill-down detail
MongoDB or PostgreSQL storage
Python API server with command-line client
Docker images
Simple file or environment variable configuration

Good fit for

→Consolidating alerts from several monitoring tools
→Operations teams wanting one alert dashboard

Built with: Python; MongoDB; PostgreSQL
Tags: monitoring; alerting; python; mongodb; postgresql; api-server; observability; operations

Alerta: questions and answers

What is Alerta used for?: Alerta is a monitoring tool that consolidates alerts from any source into one scalable server with a web console for at-a-glance views and drill-down. It is a good fit for consolidating alerts from several monitoring tools and operations teams wanting one alert dashboard.
Is Alerta open source?: Yes. Alerta is open source under the Apache-2.0 licence. Its source code is on GitHub at alerta/alerta and is written mainly in Python.
Is Alerta free?: Yes. Alerta is open source, so the software itself is free to use.
Can I self-host Alerta?: Yes. Alerta can be self-hosted on your own server or infrastructure.
What is Alerta an alternative to?: Alerta is an open-source alternative to BigPanda, PagerDuty and xMatters. Other open-source alternatives to BigPanda include Keep.
Is Alerta actively maintained?: The most recent commit to Alerta was on 19 June 2026, and the latest release is v9.1.0, published on 28 March 2026. The project has 2.5k stars on GitHub.