Available in over 90 languages, and compatible with Windows, Mac and Linux machines, Firefox works no matter what you’re using or where you are. Make sure your operating system is up to date for the best experience.
Tweak using Arkenfox or Firefox Profilemaker for greater privacy and security.
Linux
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iOS
This project is an independent fork of Firefox, with the primary goals of privacy, security and user freedom.
Every Firefox extension works, but then it is a Firefox fork after all. Privacy focused and secure, without all the commerce of a Firefox. I love the fact that I can add my own DNS server, just as with Firefox.
LibreWolf is designed to minimize data collection and telemetry as much as possible. This is achieved through hundreds of privacy, security, and performance settings and patches. Intrusive integrated add-ons including updater, crash reporter, and pocket are removed too.
Open-Source
Windows
macOS
Highly Recommended
Well, there is always Tor and the Tor-Browser bundle which, frankly, should always be your No1 Browser when it comes to privacy and anonymity.
Open-Source
Linux
Windows
macOS
Android
Highly Recommended
Chromium based—Brave blocks all creepy ads from every website by default. And that thing where ads follow you across the web? Brave blocks that too.
Honorable mentioned: Anonymized network routing (Tor mode). Brave Talk Unlimited, private video calls, right in your browser.
Controversies: Wikipedia Brave (heart)!?!
Maximize your Brave Browser Privacy and Security with no browser extensions by going into brave://flags and changing the settings for better privacy and security.
Open-Source
Linux
Windows
macOS
Android
iOS
Tor .onion
Falkon was formerly known as QupZilla. It was a research project written in Python, which later morphed into a browser. It uses the WebKit engine. It has ad-blocking, speed dial and a bookmark manager.
The performance on Falkon is good as it uses less memory than most other browsers including Firefox and Chromium. I wish the themes would look a little less dated, but other than that it's a pretty good browser.
Open-Source
Linux
Again, based on the WebKit engine, it is great for Gnome where it is pre-installed. It is, after all, the Gnome Web (Browser). It has a built-in ad-blocker but other than that it's a straightforward browser, no extras, no extensions etc.
Open-Source
Linux
A lightweight approach to removing Google web service dependency!
Chromium has its advantages, so when it comes to security this could be your daily drive.
However, be warned! It does not support 'out of the box' Chromium add-ons, it can be sorted but requires a lot of tweaking. That said, this is a great browser which comes without all the Google spyware pre-installed. The pre-selected search engines are DuckDuckGo, Ecosia and Searx.
Note: However, many people are unaware that their patches often regress the privacy/security rather than improve it.
Open-Source
Linux
Windows
macOS
Bromite is my second daily browser. I always recommend using two different browsers, regardless of whether you are on a computer or a cellphone.
Bromite has the option to add your own DNS server for just Bromite, so you could use Bromite for things you have blocked system-wide, but want to use occasionally and in isolation.
This browser is based on Firefox and is an official Tor browser. It will hide your IP address and keep you anonymous to the websites you visit.
Mull is a Firefox-based, open-source browser which also allows Firefox add-ons. I recommend here Decentraleyes and uBlock Origin. The NoScript Security Suite could be a third option for the hard core privacy people out there.
One of the big myths about iOS is that, as every browser is based on Safari anyway, you should just use Safari 'out of the box'. And even though that statement is not completely untrue, as every browser is, indeed, using the built-in Safari engine, not every browser is equally private or secure. Some even have diagnostics and other unnecessary things enabled in the browser itself.
Snowhaze is great, it has many features you can’t find in Safari itself, including adding search engines, a built-in VPN (paid service), Tor (which is experimental), but will also be able to block fonts, scripts and makes sure no-one can fingerprint your browsing experience. The browser is totally free, and you do not need to subscribe to the paid VPN service.
No data is collected
If you're looking for even more features, iCab Web is for you, however, keep in mind that this browser isn't free. Yet, it has many unique features and just like Snowhaze allows you to add search engines and also has a great built-in download manager. iCab has so much to offer that I recommend you reading the official website to learn more about it. The amount they're charging is surely worth the browser!
No data collected
Last but surely not least is Onionbrowser, which, although not an official Tor browser, is recommended by the Tor project. Not only does the browser have zero trackers, but it also allows you to use the Tor network, and hide your browsing history and habits from third parties, like your ISP.
No data collected
Out of the box, uBlock Origin blocks ads, trackers, coin miners, popups, etc.
Additionally, you can point-and-click to block JavaScript locally or globally, create your own global or local rules to override entries from filter lists, and many other more advanced features.
Open-Source
Allows potentially malicious web content to run only from sites you trust. Protect yourself against XSS and other web security exploits.
ClearURLs is an add-on based on the new WebExtensions technology and is optimized for Firefox and Chrome-based browsers.
Browser syncing as it should be: secure, anonymous and free!
Open-Source
F-Droid
Control your cookies! This WebExtension is inspired by Self Destructing Cookies. When a tab closes, any cookies not being used are automatically deleted. Keep the ones you trust (forever/until restart) while deleting the rest. Containers Supported.
“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.
Add-on allows you to read articles from (supported) sites that implement a paywall. You can also add domains as custom site and try to bypass the paywall. Weekly updates are released for fixes and new sites.
Alters some JS APIs to prevent fingerprinting.
Redirects Twitter, YouTube, Instagram and more to privacy-friendly alternatives.
Open-Source
Highly Recommended
Bitwarden, password manager, works with almost any device and browser you can mention: Windows, Mac, Linux; iOS and Android; Chrome, Firefox, Safari, Edge, and many more niche browsers.