The Defense Advance Research Projects Agency (DARPA) has recently been a bit more talkative about Memex. This program aims to search for information on the Deep Web, that is to say that deep Web which is not indexed by the usual search engines. What is more, Memex must help (and has already done so) the authorities to follow illegal activities carried out anonymously by networks like Tor via hidden .onion addresses.
For ordinary internet users, there are already search engines themselves accessible via .onion addresses and specializing in the Deep Web, sometimes to target searches related to black markets.
OnionCity is a search engine for the Deep Web which is accessible directly without going through the Tor network and allows searches for .onion sites. The resemblance to Google is not accidental since OnionCity takes advantage of Google Custom Search, the Google personalized search engine.
To operate on the visible surface of the Web while being interested in its "dark side", OnionCity relies on a Tor2web proxy which acts as the intermediary between the Web and the Tor network by working as a Tor client in the network. anonymization. Search results are presented using .onion.city subdomains. Directly visible web pages.
By querying the global version of Google (a site query: onion.city), we realize that the OnionCity index is not yet very impressive with some 750,000 Web pages from the Deep Web. If a site in .onion does not want to be indexed, it is enough for him to set up a file robot.txt (as with a current search engine).
Obviously, you should be aware that using OnionCity requires the user to draw a line under the confidentiality protections provided by the Tor network. Illegal research is therefore a bad idea. In its FAQ, OnionCity also gives an email address to report the discovery of content suspected of being illegal (custard?).
OnionCity has surfed the news around Memex to make itself known and has since adopted the use of HTTPS which it lacked.