USPhoneBook

Free US people finder with reverse phone and address search, address history, associated names, and relatives.

Free US reverse lookup for phone numbers, names, addresses, and emails. Historically it could also play a number's voicemail greeting.

Paid US background-check service covering contact info, criminal records, assets, vehicles, and social profiles.

Free US people search by name, phone, or address, with age, addresses, and relatives.

People and property aggregator with profiles combining addresses, phones, employment, court records, and social links. US focus, with some international coverage.

Free US people search with address history, phones, emails, and relatives. Useful for cross-checking other broker sites.