LibreX - Framework and javascript free privacy respecting meta search engine
sn0int - sn0int is a semi-automatic OSINT framework and package manager
SearXNG - SearXNG is a free internet metasearch engine which aggregates results from various search services and databases. Users are neither tracked nor profiled.
SpiderFoot - Open source intelligence (OSINT) automation tool.
Sherlock - Sherlock provides insights on user engagement for product makers.
Blackbird OSINT - An OSINT tool to search for accounts by username in social networks.