ZabaSearch - Find people free with Zabasearch directory engine that includes free people search, reverse phone number lookup, address lookup, and more.

DataWalk - DataWalk is a software platform to connect numerous large data sets, both external and internal, into a single repository for fast visual analysis.

RealPeopleSearch - RealPeopleSearch is a web-based software that allows you to get the basic and public record of the concerned person within a few minutes by providing little information.

Lampyre - Lampyre - an efficient data analysis and OSINT multi-tool for everyone.

FindPeopleFast - FindPeopleFast is an online people search platform that allows you to get the results of the people within a few minutes by providing the first and last name or phone number.

Maltego - Maltego is an open source intelligence and forensics application.