Firefox add-on with keyword - monitor
Add-ons (also known as extensions) are small programs that run inside web browsers like Mozilla Firefox. They add extra features to the browser without having to download anything new. You can use extensions to make browsing faster, easier, and safer. Some extensions even let you do things like translate text on websites, search the web, and play games.
There are over 28,000 Firefox-addons and 480,000 themes, making it hard to find the best ones. so we have created a way to sort through all of them. Use the dropdown above to set different filters. Add-ons are sorted by number of active users.
To set even more advanced filters, and sort the Firefox add-ons differently, please visit our Advanced search tool. Note that Advanced search tool is only available to premium members.
![Distill Web Monitor](https://addons.mozilla.org/user-media/addon_icons/847/847334-64.png?modified=1600233669)
#1, Distill Web Monitor
![Distill Web Monitor](https://addons.mozilla.org/user-media/addon_icons/847/847334-64.png?modified=1600233669)
![XDM Browser Monitor](https://addons.mozilla.org/user-media/addon_icons/929/929143-64.png?modified=mcrushed)
#2, XDM Browser Monitor
![XDM Browser Monitor](https://addons.mozilla.org/user-media/addon_icons/929/929143-64.png?modified=mcrushed)
![XDM Browser Monitor v8+](https://addons.mozilla.org/static-server/img/addon-icons/default-64.d144b50f2bb8.png)
#3, XDM Browser Monitor v8+
![XDM Browser Monitor v8+](https://addons.mozilla.org/static-server/img/addon-icons/default-64.d144b50f2bb8.png)
![app.telemetry Page Speed Monitor](https://addons.mozilla.org/user-media/addon_icons/377/377584-64.png?modified=1510053621)
#4, app.telemetry Page Speed Monitor
![app.telemetry Page Speed Monitor](https://addons.mozilla.org/user-media/addon_icons/377/377584-64.png?modified=1510053621)
![PageProbe - Automatic Page Monitor](https://addons.mozilla.org/user-media/addon_icons/2286/2286907-64.png?modified=e92ed95a)
#5, PageProbe - Automatic Page Monitor
![PageProbe - Automatic Page Monitor](https://addons.mozilla.org/user-media/addon_icons/2286/2286907-64.png?modified=e92ed95a)
![Network Monitor](https://addons.mozilla.org/user-media/addon_icons/2614/2614660-64.png?modified=256b8117)
#6, Network Monitor
![Network Monitor](https://addons.mozilla.org/user-media/addon_icons/2614/2614660-64.png?modified=256b8117)
![Live Reload — monitor and reload html, css, js](https://addons.mozilla.org/user-media/addon_icons/889/889981-64.png?modified=3563058c)
#7, Live Reload — monitor and reload html, css, js
![Live Reload — monitor and reload html, css, js](https://addons.mozilla.org/user-media/addon_icons/889/889981-64.png?modified=3563058c)
![WhatsApp Online Monitor](https://addons.mozilla.org/user-media/addon_icons/2633/2633831-64.png?modified=dfc3fa97)
#8, WhatsApp Online Monitor
![WhatsApp Online Monitor](https://addons.mozilla.org/user-media/addon_icons/2633/2633831-64.png?modified=dfc3fa97)
![Full Screen Multiple Monitor](https://addons.mozilla.org/user-media/addon_icons/896/896474-64.png?modified=f7536c9c)
#9, Full Screen Multiple Monitor
![Full Screen Multiple Monitor](https://addons.mozilla.org/user-media/addon_icons/896/896474-64.png?modified=f7536c9c)
![Internet Connection Monitor](https://addons.mozilla.org/static-server/img/addon-icons/default-64.d144b50f2bb8.png)
#10, Internet Connection Monitor
![Internet Connection Monitor](https://addons.mozilla.org/static-server/img/addon-icons/default-64.d144b50f2bb8.png)
![Privacy Monitor](https://addons.mozilla.org/user-media/addon_icons/1473/1473506-64.png?modified=46407c2d)
#11, Privacy Monitor
![Privacy Monitor](https://addons.mozilla.org/user-media/addon_icons/1473/1473506-64.png?modified=46407c2d)
![PR Monitor](https://addons.mozilla.org/user-media/addon_icons/1482/1482929-64.png?modified=c09f5a71)
#12, PR Monitor
![PR Monitor](https://addons.mozilla.org/user-media/addon_icons/1482/1482929-64.png?modified=c09f5a71)
![Monitor Web Pages](https://addons.mozilla.org/user-media/addon_icons/817/817998-64.png?modified=1497167278)
#13, Monitor Web Pages
![Monitor Web Pages](https://addons.mozilla.org/user-media/addon_icons/817/817998-64.png?modified=1497167278)
![Sideview Plus: Multitask w/o Second Monitor](https://addons.mozilla.org/user-media/addon_icons/2647/2647360-64.png?modified=46450fe8)
#14, Sideview Plus: Multitask w/o Second Monitor
![Sideview Plus: Multitask w/o Second Monitor](https://addons.mozilla.org/user-media/addon_icons/2647/2647360-64.png?modified=46450fe8)
![Wachete - Monitor web changes](https://addons.mozilla.org/user-media/addon_icons/682/682696-64.png?modified=1454059215)
#15, Wachete - Monitor web changes
![Wachete - Monitor web changes](https://addons.mozilla.org/user-media/addon_icons/682/682696-64.png?modified=1454059215)
![Monitor WebSocket frames (new)](https://addons.mozilla.org/user-media/addon_icons/2513/2513017-64.png?modified=418b9b3b)
#16, Monitor WebSocket frames (new)
![Monitor WebSocket frames (new)](https://addons.mozilla.org/user-media/addon_icons/2513/2513017-64.png?modified=418b9b3b)
![Password Leak Monitor](https://addons.mozilla.org/user-media/addon_icons/2122/2122971-64.png?modified=45689c8d)
#17, Password Leak Monitor
![Password Leak Monitor](https://addons.mozilla.org/user-media/addon_icons/2122/2122971-64.png?modified=45689c8d)
![RoMonitor Stats - Roblox Stats](https://addons.mozilla.org/user-media/addon_icons/2654/2654991-64.png?modified=7cdd14dd)
#18, RoMonitor Stats - Roblox Stats
![RoMonitor Stats - Roblox Stats](https://addons.mozilla.org/user-media/addon_icons/2654/2654991-64.png?modified=7cdd14dd)
![network monitor without devtools](https://addons.mozilla.org/user-media/addon_icons/2836/2836664-64.png?modified=280b4507)
#19, network monitor without devtools
![network monitor without devtools](https://addons.mozilla.org/user-media/addon_icons/2836/2836664-64.png?modified=280b4507)
![Yaware.TimeTracker Url Monitor](https://addons.mozilla.org/user-media/addon_icons/879/879980-64.png?modified=1522233051)
#20, Yaware.TimeTracker Url Monitor
![Yaware.TimeTracker Url Monitor](https://addons.mozilla.org/user-media/addon_icons/879/879980-64.png?modified=1522233051)
![BMC TrueSight Real User Monitoring Enterprise](https://addons.mozilla.org/user-media/addon_icons/1482/1482492-64.png?modified=d9eef357)
#21, BMC TrueSight Real User Monitoring Enterprise
![BMC TrueSight Real User Monitoring Enterprise](https://addons.mozilla.org/user-media/addon_icons/1482/1482492-64.png?modified=d9eef357)
![Diminish - SaaS Usage Monitor](https://addons.mozilla.org/user-media/addon_icons/2802/2802216-64.png?modified=9076f20a)
#22, Diminish - SaaS Usage Monitor
![Diminish - SaaS Usage Monitor](https://addons.mozilla.org/user-media/addon_icons/2802/2802216-64.png?modified=9076f20a)
![Battery Monitor](https://addons.mozilla.org/user-media/addon_icons/753/753224-64.png?modified=1481934019)
#23, Battery Monitor
![Battery Monitor](https://addons.mozilla.org/user-media/addon_icons/753/753224-64.png?modified=1481934019)
![RARBG Monitor](https://addons.mozilla.org/user-media/addon_icons/2321/2321782-64.png?modified=966bf984)
#24, RARBG Monitor
![RARBG Monitor](https://addons.mozilla.org/user-media/addon_icons/2321/2321782-64.png?modified=966bf984)
![Cashback Monitor](https://addons.mozilla.org/static-server/img/addon-icons/default-64.d144b50f2bb8.png)
#25, Cashback Monitor
![Cashback Monitor](https://addons.mozilla.org/static-server/img/addon-icons/default-64.d144b50f2bb8.png)