[felipeqq2]

You should check out https://yacy.net: a global, P2P web search engine, where each peer can build and share its own index, etc.

[password4321]

YaCy discussed almost a year ago: https://news.ycombinator.com/item?id=32597309

[Alifatisk]

Cool find, this seems to be a good option.

SearX also came to my mind but isn't exactly p2p.