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Maltego - Maltego is an open source intelligence and forensics application.
Lampyre - Lampyre - an efficient data analysis and OSINT multi-tool for everyone.
OSINT Tool - OSINT-tool.com is two things.
Linkurious - Search and visualize your graph data through a simple web-based interface
SpiderFoot - Open source intelligence (OSINT) automation tool.
sn0int - sn0int is a semi-automatic OSINT framework and package manager