Resources from SANS Open Source Intelligence Talk:
- Snapchat live activity map - map.snapchat.com
- Viewdns; various DNS history and info gathering tools - https://viewdns.info/
- domainbigdata
- WHOIS database - https://www.whoxy.com/whois-database/
- (Paid) DeHashed; find decrypted passwords collected from dumps and leaks (level up from haveibeenpwned) - https://www.dehashed.com
- UnTappd Scraper - https://github.com/WebBreacher/untappdScraper/blob/master/untappd.py