Here are some of the best plugins for Firefox which I use (NOTE: These plugins are stored directly on the website, not on Firefox Addons):
- Close Other Tabs
Close Other Tabs is a plugin which de-clutters your browser’s tabs by removing them. The tab which you are currently on will not be erased. Just click the extension and your browser is de-cluttered. Download here.
2. DuckDuckGo Privacy Essentials
This plugin tells you about how secure any website is. It is very useful for detecting bad websites. Download here.
3. DownThemAll
DownThemAll is a mass downloader for any website so you can download pretty much the whole website altogether. Download here.
4. Clear URLs
This plugin removes all tracking and privacy-invasive data from any website URL. Download here.
5. uBlock Origin
This plugin is the best adblocker for any site and works without flaws. Download here.
6. Bitwarden
Bitwarden is a great plugin for security, it stores all of your passwords in one place. Download here.
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