DuckDuckGo
Used by 7 peopleduckduckgo.com ↗

“DuckDuckGo is my default search engine.”
Audrey Watters Interview, Writer (Hack Education) · via Uses This 
“My search engine is currently duck duck go, using !google very often when the result page I get via DDG is not what I expected.”
Salvatore Sanfilippo Interview, Software developer (Redis) · via Uses This