diff --git a/Appendix-B:-Extensions.md b/Appendix-B:-Extensions.md
index 6838bd8..26b2d31 100644
--- a/Appendix-B:-Extensions.md
+++ b/Appendix-B:-Extensions.md
@@ -21,6 +21,8 @@ These are all, where applicable, best configured to `deny-all` and whitelist.
 * [Smart Referer](https://addons.mozilla.org/firefox/addon/smart-referer/) | [GitHub](https://github.com/meh/smart-referer)
 * [Neat URL](https://addons.mozilla.org/firefox/addon/neat-url/) <sup>✔ [Privacy](https://addons.mozilla.org/firefox/addon/neat-url/privacy/)</sup> | [GitHub](https://github.com/Smile4ever/firefoxaddons)
 * [Skip Redirect](https://addons.mozilla.org/firefox/addon/skip-redirect/) | [GitHub](https://github.com/sblask/webextension-skip-redirect)
+* [Violentmonkey](https://addons.mozilla.org/firefox/addon/violentmonkey/) | [GitHub](https://github.com/violentmonkey/violentmonkey)
+  * Allows you to run [User Scripts](https://github.com/ghacksuserjs/ghacks-user.js/wiki/3.1-User-Scripts) which can do neat things
 * [Request Control](https://addons.mozilla.org/firefox/addon/requestcontrol/) | [GitHub](https://github.com/tumpio/requestcontrol)
    * Examples of [Filter Rules](https://github.com/ghacksuserjs/ghacks-user.js/wiki/3.5-Request-Control)
 * [Redirector](https://addons.mozilla.org/firefox/addon/redirector/) <sup>✔ [Privacy](https://github.com/einaregilsson/Redirector/blob/master/privacy.md)</sup> | [GitHub](https://github.com/einaregilsson/Redirector)