可以通过这些网站，收集网络上开放免费查看的一些资源和信息：

thatsthem.com
pipl.com
peepdb.com
zabasearch.comintelius.com
radaris.com
spokeo.com
reversegenie.com/pepole.php
yasni.com
advancedbackgroudchecks.com
peekyou.com
zoominfo.com
howmanyofme.com
mocavo.com
classmates.com
indeed.com
salesmaple.com
ripoffreport.com
mailtester.com
verify-email.org
tools.verifyemailaddress.io
samy.pl/peepmail
e-mailvalidator.com
email-format.com
toofr.com
whoismind.com
knowem.com
namechk.com
checkusernames.com
namecheckr.com
namevine.com
com.lullar.com
lastpass.com/snapchat