OSINT

People Search and Lookups:
https://www.peekyou.com
https://www.melissa.com/
https://xlek.com/
https://infotracer.com/
https://thatsthem.com/

Facial recognition:
https://www.osintcombine.com/post/facial-recognition-for-verification-missing-persons
https://pimeyes.com/en

Criminal:
https://nsopw.gov/
https://www.bop.gov/mobile/find_inmate/byname.jsp

Political:
https://voterrecords.com/

Public Safety Radios:
https://www.broadcastify.com/
https://www.radioreference.com/

Maps and Cameras:
Map.snapchat.com
https://calculator.ipvm.com/
http://exif.regex.info/exif.cgi

Crawlers:
SpiderFoot
https://dnsdumpster.com/

Phone:
https://www.spydialer.com/ 

Social:
http://socialmention.com
http://wiki.kenburbary.com/social-meda-monitoring-wiki