Proxied (therefore non-personalized) Google results: https://www.startpage.com/
Heavily privacy-focused, even proxying content: https://www.ixquick.eu/
Meta search engine with very feature-rich search, self-hostable: https://searx.me/
Search engine with very feature-rich search result pages: https://www.qwant.com/
Not yet released, peer-to-peer search: http://pearsearch.org/