DuckDuckGo: Bang - Search thousands of sites directly from DuckDuckGo
Ghostery - Privacy tool for transparency and control
Land Ho! - Incognito search where you maintain your own search history.
Wipr - Block ads, trackers and miners on iOS and macOS
Chataco - The social network for an easy, fun, objective internet
Social Sponsored Ads Blocker - Remove sponsored content from Facebook, Twitter & LinkedIn