DuckDuckGo Privacy App & Extension - Privacy, simplified. Available on all major platforms.
uBlock Origin - Popular and efficient blocker for Chromium, Chrome, Edge, Firefox, Opera, Safari, Thunderbird.
Searx - Open source metasearch engine
Adblock Plus - AdBlock Plus is a browser extension for Firefox, Chrome, Opera, and several other popular browsers that prevents intrusive ads like pop-ups and malicious code from appearing on websites you visit.
Search Encrypt - Search Encrypt was designed from the ground up with privacy as its core value. Search Encrypt protects your privacy by encrypting your search terms, expiring your browsing history, and forcing advanced SSL encryption
AdGuard - Surf the Web Ad-Free and Safely. Shield up!