The most popular open source web browser, Firefox is non-commercial, free and maintained by volunteers.
ANDROID APP – Firefox Browser
iPHONE APP – Firefox Browser
WINDOWS / MAC / LINUX APP – Firefox Browser
Privacy Badger and uBlock Origin
These aren’t web browsers themselves, but complementary open source add-ons that you can install on any major browser to help protect your privacy online. It’s recommended that you install both if you can.
Privacy Badger gradually learns which sites are trying to track you and blocks them, while uBlock Origin blocks particular sites and ads based on built-in pre-written lists. If you’re an advanced user, you can also manually add more lists to block in uBlock Origin.
(Note that there’s another add-on called simply “uBlock” which is NOT recommended.)
PRIVACY BADGER – Official Website
Better (also called Better Blocker) is an open source add-on for Apple’s Safari browser, available for iPhone, iPad and Mac. Better helps to protect privacy by blocking ads and trackers when you’re browsing the web on Safari.
OFFICIAL WEBSITE – Better.fyi
iPHONE & iPAD APP – Better Blocker
MAC APP – Better Blocker
The open source Tor Browser is a specially modified version of Firefox. It’s a bit harder to use than standard Firefox, but it does a more thorough job at protecting your privacy.
Tor Browser goes to extreme lengths to reduce the amount of identifying information you send to websites when you visit them, using the Tor network of volunteers’ computers to disguise your own computer’s signatures. This makes it much more difficult for companies like Google and Facebook to spy on you, though it does also make browsing slower as you’re not connecting to sites directly.
WINDOWS / MAC / LINUX APP – Tor Browser