A somewhat curated list of links to various topics in application security.
Open Source Intelligence Gathering: Techniques, Automation, and Visualization
OSINT: How to find information on anyone
DataSploit/datasploit
Matchlight by Terbium Labs
A Search Engine for the Internet of Things
IVMachiavelli/OSINT_Team_Links
Hunchly is Perfect for
Automating OSINT Blog
OSINT Framework