---
title: Node.js agent licenses
source: https://docs.newrelic.com/docs/licenses/product-or-service-licenses/new-relic-apm/nodejs-agent-licenses
---

We love open-source software, and use the following in the New Relic Node.js agent. Thank you, open-source community, for making these fine tools! Some of these are listed under multiple software licenses, and in that case we have listed the license we've chosen to use.

| **Library**                                                              | **License**                               |
| ------------------------------------------------------------------------ | ----------------------------------------- |
| [concat-stream](https://www.npmjs.com/package/concat-stream)             | [MIT](http://opensource.org/licenses/MIT) |
| [https-proxy-agent](https://www.npmjs.com/package/https-proxy-agent)     | [MIT](http://opensource.org/licenses/MIT) |
| [json-stringify-safe](https://www.npmjs.org/package/json-stringify-safe) | [ISC](http://opensource.org/licenses/ISC) |
| [readable-stream](https://www.npmjs.com/package/readable-stream)         | [MIT](http://opensource.org/licenses/MIT) |
| [semver](https://npmjs.org/package/semver)                               | [ISC](http://opensource.org/licenses/ISC) |
| [async](http://github.com/caolan/async)                                  | [MIT](http://opensource.org/licenses/MIT) |
| [fibonacci-heap](https://github.com/gwtw/ts-fibonacci-heap)              | [MIT](http://opensource.org/licenses/MIT) |

Remaining code in versions prior to v6.11.0 is licensed under the [New Relic agent license agreement](https://docs.newrelic.com/docs/licenses/license-information/other-licenses/new-relic-agent-license). License terms for v6.11.0 and later can be found on [GitHub](https://github.com/newrelic/node-newrelic/blob/main/LICENSE).