Firefox

Mozilla didn't choose privacy. Qwant sends you IP address to Microsoft when you search on their platform. If you want a more responsible search engine, DuckDuckGo is still the way to go.

Update 3: DuckDuckGo also sends along more information than I originally noticed, including "anonymous browser and device information with our hosting and content providers for security and display purposes (for example, that you’re using a mobile device)"

The information collected by Qwant includes...

• hash of the IP address
• User Agent
• market segment of a request
• date and time of the visit
• information of the country and the chosen language
• search keywords
• where a user came from
• type of device used
• source of visit
• operating system
• major browser version

Qwant may (will) transfer to Microsoft:

• your full IP address
• Information about the browser you are using (the User Agent
• The first three bytes of your IP address;
• The approximate geographic area at the origin of the search, at the scale of a region or city;
• The hash generated from your IP address and User Agent

Update 2: removing name and email as that's only for optional account creation

Update 1: Qwant wants you to disable your ad blocker