# Application Performance Monitoring

* [Datadog](#datadog)
* [Elastic APM](#elastic-apm)
* [Lightstep](#lightstep)
* [New Relic](#new-relic)

## Datadog

[Pricing page](https://www.datadoghq.com/pricing/)

* *Free tier*: Monitoring of 5 hosts with 1 day metric rentention.
* *Pros*: Offer dashboards and integrations with hundreds of apps and services.

## Elastic APM

[Pricing page](https://www.elastic.co/apm)

* *Free tier*: unlimited applications, 500K transactions/month, 24 hour data retention on metrics and errors, unlimited users.
* *Pros*: Monitor front-end and back-end JavaScript applications and most common frameworks: React, Angular 1 and 2 and Node.js. Also supports Django and Flask. *Formerly Opbeat, acquired by Elastic*

## Lightstep

[Pricing page](https://lightstep.com/pricing)

* *Free tier*: explore all features, 28 day data retention, 4MB/minute trace data, 7500 monthly active time series, unlimited users.
* *Pros*: Unlimited infrastructure, application, runtime, cloud, third-party metrics ingestion. Built-in integrations, dashboards, change intelligence, alerting, and real-time querying.

## New Relic

[Pricing page](https://newrelic.com/pricing)

* *Free tier*: 100 GB/month, 1 free full access user, unlimited free basic users.
* *Pros*: Collect all your telemetry data in one place to deliver full-stack observability and power AI-driven insights so you can confidently improve service reliability and accelerate time to market. Supports most popular back-end, front-end, infrastructure, and cloud frameworks and services.
* *Exceeding the free tier*: After exceeding the 100 GB/month you will see a paywall asking you to add a credit card. Data collection will continue and access to key pages to lower data ingest will still be available.