- 007-People-Finder.com
 - Helps find people anywhere in the United States with searches by name, age, date of birth, and social security number.  1st locate
- Helps you find old pals, school friends, work mates, family, and missing persons, by using electoral rolls, reverse searching, surname lists, and more.- Aaron's Private Investigations
- Specialises in skip tracing, locating adoptees, missing relatives, and more.
- Absolute Research Solutions, LLC
- Specialises in locating people, conducting employee background checks, and other personal and corporate research.
- Accurate Information Services
- Provides background checks, SSN verification, public records screening services, and more.
- Accurate People Search
- Provides access to databases to search for old friends, classmates, family members, and more.
- Adolescent Guidance Services (AGS)
- Special emphasis is placed on locating and returning runaways through non-violent, crisis intervention techniques. Also offers youth transport services to schools, mental health facilities, wilderness programmes, social engagements, and judicial facilities.
- Adoptions-Reunited
- Tracing service for adopted persons and natural birth parents. Includes free message posting.
- BestPeopleSearch.com
- Investigators that help find missing people, perform background checks, and locate address and phone information.
- BigHugs.com
- Locate lost family, friends, and loved ones. Free adoption registry. Several links to investigative sites.
- Blood Ties Tracing Service
- U.K.-based people search service that finds and reunites lost family and missing friends.
- Champion & Champion
- Worldwide genealogical research firm specialising in missing and unknown heirs.
- Computrace People Search
- Missing persons service experienced in locating people.
- Deadbeat Dad/Mom Finders
- Locates missing dads and moms for child support collection. Services also include background checks for criminal history, bankruptcies, judgments, liens, and lawsuits.
- Find People Fast
- Performs computer searches to help locate lost or missing relatives, friends, or other persons in the U.S.
- Finders Genealogists
- U.K. based firm of probate genealogists providing international tracing services for missing and unknown beneficiaries.
- findersUSA.com
- Location of missing persons, family, heirs, and descendants as well as asset searches and background reports.
- FindMissingPeople.com
- Source for online search tools.
- GIsearch.com
- Helps to locate lost friends, reunite fellow military service members, and honour armed forces veterans.
- Global Tracing Services, Inc.
- Locates missing heirs, beneficiaries, insureds, plaintiffs, defendants, witnesses, and more.
- Harpernet Investigative Services
- Private detective agency specialising in video surveillance and helping find people.
- Harvey E. Morse, P.A.
- Specialises in locating people who are entitled to monies or assets of which they are unaware; site includes a list of individuals "Most Wanted".
- Infoquest, Inc.
- Extensive people search services.
- International Genealogical Search Inc.
- Prove heirship and locate missing heirs.
- My People Search
- Offers information and resources on how to find people worldwide.
- OmniTrace
- Specialises in missing person and adoption searches worldwide.
- People Locators UK
- Trace and find lost friends and family. Adoption cases welcome.
- People Search Directory
- Lookup people using names, addresses, phone numbers, and conduct background checks.
- People Tracer
- Missing persons agency for tracing family, lost relatives, and service friends.
- People-Finder.tv
- Offers an online people search as well as investigative services.
- PeopleFind.com
- Offering a directory of services to find old friends, family members, public records, and more.
- PeopleSearch.com
- Find phone numbers, addresses, and other contact information for people you’re searching for.
- Pro People Search
- People finder service helping to locate missing persons.
- Search America
- Finds people in order to collect money and reduce bad debit.
- Search International Inc.
- Specialises in locating missing heirs and beneficiaries.
- Secure Investigation Services
- Private investigators to the legal profession and general public.
- Seekers of the Lost
- Helping to find missing friends, family, and military people through the use of database searches.
- Trace and Locate
- Searches for missing friends and family in the United Kingdom.
- U S Locator's People Search Services
- Will help you find people anywhere in the U.S. Search by name and age, or social security number.
- UK Online Detective
- Provides people-searching services for the U.K. using the voter's role, Social Security, DVLA records, and other government and personal data.
- UK People Finder
- Traces lost or missing family, friends, birth mothers, and beneficiaries.
- US Search.com
- Provider of location, verification, and screening services for consumer and enterprise clients.
- USA People Search
- Provides instant search results that include a possible current to 20-year address history, phone numbers, and birth dates. Background checks with nationwide criminal records available.
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