Plugins that you should have installed to browse internet safely. Of course you don't need to install them all. One java script blocker and one ad blocker and one privacy/tracker blocker is enough. On the list you can find best plugins for Chrome/Firefox/Opera. It is also good to have VirusTotal plugin installed to scan files before download.
HTTPS Everywhere is a browser extension produced as a collaboration between The Tor Project and the Electronic Frontier Foundation. It encrypts your communications with a number of major websites.
HTTPZ is meant to be unobtrusive and lightweight. Is very configurable, and should be slightly more secure than some of the alternatives out there, since it has a couple of built-in ways to defend against SSL stripping attacks.
The EU regulations require that every website must get user's permission before installing cookies. Imagine how irritating that becomes when you surf anonymously or if you delete cookies automatically every time you close the browser.
This efficient browser add-on blocks ads, trackers, and malware by default employing various filter lists, acting as a comprehensive wide-spectrum blocker.
Block ads, cookies, popups & other trackers. Ghostery sets you up for a private, transparent, and fast internet.
Control your cookies! This extension is inspired by 
Self-Destructing Cookies. When a tab closes, any cookies not being used are automatically deleted. Prevent tracking by other cookies and add only the ones you trust.
Privacy Badger is a browser-add on tool that analyzes sites to detect and disallow content that tracks you in an objectionable, non-consensual manner. When you visit websites, your copy of Privacy Badger keeps note of the "third party" domains that embed images...
MinerBlock is an efficient browser extension that focuses on blocking browser-based cryptocurrency miners all over the web.
The NoScript Firefox extension provides extra protection for Firefox, Seamonkey and other mozilla-based browsers: this free, open source add-on allows JavaScript, Java, Flash and other plugins to be executed only by trusted web sites of your choice (e.g. your online bank).
A simple extension that brings some of 
NoScript 's functionality to Chrome while emphasizing simplicity and intuitiveness (no affiliation to NoScript or NotScripts).
Point & click to forbid/allow any class of requests made by your browser. Use it to block scripts, iframes, ads, facebook, etc.
Guard your browser against CSS Exfil attacks!
CSS Exfil is a method attackers can use to steal data from web pages using Cascading Style Sheets (CSS). This plugin sanitizes and blocks any CSS rules which may be designed to steal data.
With VT4Browsers you will be able to use VirusTotal to analyze urls and files automatically. You can change the extension's behavior at any time.
"User Agent Switcher and Manager" spoofs browser's User-Agent string. This string is used by web servers to provide content to you. Based on your browser type and operating system, web servers might provide different HTML content (like a different styling or lower...
Automatically change the user agent after specified period of time to a randomly selected one, thus hiding your real user agent.
Protects you against tracking through "free", centralized, content delivery. It prevents a lot of requests from reaching networks like Google Hosted Libraries, and serves local files to keep sites from breaking. Complements regular content blockers.
Cloud Firewall is a browser extension/addon that allows users to block connections to sites, pages and web resources (images, videos, etc) hosted in major cloud services if the user wishes to do so.
This extension will automatically remove tracking elements from URLs to help protect your privacy when browse through the Internet.
FastForward circumvents sites which make you wait (like adf.ly), make you do something (e.g., show.co and sub2unlock.com) and even trackers (such as bit.ly and t.co)!.
If you hate those obnoxious and very annoying redirects, then this is the tool for you. Skip Redirect is an add-on for Firefox that skips redirects. It works flawlessly!.
Privacy, simplified. Our add-on provides the privacy essentials you need to seamlessly take control of your personal information, no matter where the internet takes you: tracker blocking, smarter encryption, DuckDuckGo private search, and more.
"Terms of Service; Didn't Read" (short: ToS;DR) is a project started in June 2012 to help fix the "biggest lie on the web": almost no one really reads the terms of service we agree to all the time.
As you can see there are quite a few plugins providing protection against various threats on the network. Read about these add-ons and the threats that are waiting for you while surfing the web. I also invite you to my website https://0ut3r.space/ for more interesting info.
Comments
You might want to look into these apps. A lot are outdated or redundant. For example, uBlock Origin and NoScript, Scriptsafe or uMatrix. uBlock satisfies everything from the latter 3.
Also, while the user-Agent header apps can be useful, they along with privacy badger have been found to make it easier to fingerprint your device. A better implementation is about:config settings to turn on fingerprint protection or to use something better like Mullvad browser or Tor browser.
I agree with this. Privacy Badger isn't as good as people make it out to be, also becoming redundant with something like uBlock Origin. Privacy settings within Firefox such as cookies and about:config changes are usually more than enough when combined with uBlock,