---
title: Add-ons
slug: Tools/Add-ons
tags:
  - NeedsTranslation
  - TopicStub
  - Web Development
  - 'Web Development:Tools'
translation_of: Tools/Add-ons
---
<p>Developer tools that are not built into Firefox, but ship as separate add-ons.</p>

<dl>
 <dt><a href="https://addons.mozilla.org/en-US/firefox/addon/websocket-monitor/">WebSocket Monitor</a></dt>
 <dd>Examine the data exchanged in a WebSocket connection.</dd>
 <dd> </dd>
</dl>