https://osintframework.com/
https://www.babelstreet.com/ (only US)
https://www.shodan.io/
https://www.maltego.com/
https://intelx.io/
https://osintleak.com/
https://leakcheck.io/
https://dehashed.com/
https://leakpeek.com/
https://snusbase.com/
https://ghostproject.fr/
https://leak-lookup.com/
https://nuclearleaks.com/
https://www.dehashed.com/
https://scatteredsecrets.com/
https://haveibeenpwned.com/
https://blackkite.com/
https://joe.black/leakengine.html
https://epieos.com/
https://breachdirectory.com/search
https://osint.link/
Happy learning!