# Research > Every Research site on Tor.Live, with ratings and reviews. 3 Research sites, ranked by popularity. 3 up now · 100% average uptime · Newest: Monero Observer ## Sites - [DEF CON](): Started in 1992 by the Dark Tangent, DEF CON is the world's longest-running and largest underground hacking conference. Hackers, corporate IT professionals,... - [Onion Archive](): The Onion Archive crawls and snapshots publicly accessible .onion websites, creating a permanent, searchable record of the Tor hidden services ecosystem. We'... - [Monero Observer](): Monero news daily publication. Read about the latest Monero research and development efforts, community meetings, events and projects.