Neeva – privacy and subscription search engine comes out of beta for $5 a month.
Brave – public Beta for privacy engine. Note: they have built their own index.
PrivaSeer– Built by a team of Penn State-led researchers recently who got a $1.2 million National Science Foundation grant to build a search engine to help scientists search documents about privacy
Trueheart – social impact search engine donates 80% of their net profits to charities.