The original list was compiled by the World Privacy Forum They have an excellent site for additional information about some of these companies.
The companies listed below are sellers and collectors of information. Many of these acquire information without permission. Most brokers sell information in 2 basic forms. Lists are the process associated by commonality of private information. Portfolios are collections of private information about an individual. Most brokers attempt to hide their actions, because simply, no one outside of government or regulated business has a 
right to your name without a relationship with you. Often brokers will insist that the information is public information. That distinction is reserved for only information disclosed from government records. Government records belong to the all of public, thus selling by third parties is improper use and no one has the right to sell your information. All information that is related to you is your property; brokers privately know this is true. Therefor only an agreement made by you, allowing the release of your information is the only justification for keeping your information that can be made. An agreement is a form of contract that can be canceled or modified at any time by either party. Your state has its own rules regarding contract laws.
Acxiom
Opt-Out link
Mailing Address:
Acxiom
601 E. Third Street
PO Box 8190
Little Rock AR 72203-8190
Datalogix is Now owned by Oracle
Opt-Out link
Mailing Address:
Oracle Corporation
500 Oracle Parkway
Redwood Shores, CA 94065
DMAChoice
Email Opt-Out link
Mailing Address:
Direct Marketing Association, Inc.
1615 L Street
Washington, DC 20036
ebureau
Opt-out link
Mailing Address:
EBureau
25 6th Avenue North
St. Cloud, MN 56303
Epsilon Data Management
Opt-out link
Mailing Address:
Epsilon
Dallas 6021 Connection Drive
Irving, TX 75039
Experian (Audience IQ, Direct Mail, Telemarketing, Email,Preapproved Offers)
D,C,L,$
Mailing Address:
Experian
P.O. Box 4500.
Allen, TX 75013.
Intelius, Inc.
Opt-Out link
Mailing Address:
inome, inc. dba Intelius
500 108th Ave NE
Suite 2200
Bellevue, WA 98004
Lexis Nexis Accurint
Opt-Out link
Mailing Address:
LexisNexis Individual Requests for Information Suppression
PO Box 933
Dayton, OH 45401
People Finders
uses data from other sources
beenverified
idtrue
instantcheckmate
Opt-Out link
Mailing Address:
PeopleFinders.com
1821 Q Street Sacramento, CA 95811
Spokeo Inc. (Spokeo)
uses other sources and makes opt out difficult
Mailing Address:
556 S. Fair Oaks Ave
#101-179
Pasadena, CA USA 91105
Whitepages
Many Data brokers on the internet do not have data themselves but sell information
411.com (WhitePages affiliate)
MSN WhitePages (White Pages affiliate)
Phone Book (affiliated with Whitepages.com)
PhoneNumber.com (White Pages affiliate)
411.info
411Locate
500 Million Phone Records (mirror for PhoneDetective)
Abacus (Epsilon subsidiary)
About.com
Accutellus.com
Addresses.com
Advanced Background Checks
AllAreaCodes.com
American Yellow Pages http://www.ypstate.com
AnyWho (Part of YP.com)
Archives
Background Record Finder (affiliated with Intelius)
Background Report 360.com
Background Spider
Background–Check.net (affiliate of eVerify)
Been Verified
Birth Details (Intellius subsidiary)
Birth Records (Intellius subsidiary)
Check Mate LLC
Checkpeople.com
classmates.com
Contractor Defense
CognitiveLogic
Court Registry
DA Plus (now InfoUSA)
Death Records (ProCash)
Detective Unlimited
DirectMail.com
eLookup
EmailFinder.com
EmailTracer.com
Find-CellPhoneNumbers.com
FoneCart (also InfoUSA)
Free Background Check
Free Phone Tracers.com
Geni.com
Harris Digital Publishing
Health.com
InfoUSA
Instant Checkmate
Instant People Finders
Instantbackgroundreport.com
Jailbase
Jigsaw
KBMG
kgbpeople
Libertydata.net
LocateFamily.com
Lookup Anyone
Lookup.com
MobilePhoneNumber.com
MSN WhitePages (White Pages affiliate)
Mugshots.com
Mugshots Database
MugshotsRUS
MyLife.com (also addressbook.com, myaddressbook.com, reunion.com, highschoolalumni.com, MyLife.com, whoislookingforyou.com, whoissearchingforyou.com, whosesearchingforyou.com,
whossearchingforyou.com, goodcontacts.com)
Names Database (Classmates, Opobox)
NetDetective.net
Peeepl
Peek You
Peepdb
People 411 (US Search affiliate)
People Lookup
People Records
People Search Now
PeopleAZ.org
peoplebyname
Peoplelookup.com
Peoplesearches.com (Intelius affiliate)
PeopleSearchNow.com
PeopleSmart
PeopleSmart
PeopleVerified
Peoplewise (Lexis Nexis)
Phone Book (affiliated with Whitepages.com)
Phone Detective
Phone Detective.com
Phone Lookup
Phonebooks.com (affiliated with Intelius)
PhoneNumber.com (White Pages affiliate)
PHONENUMBERWhois
Phoneownerrecords.com
PhoneRegistry (Also ReviewPhoneRegistry.com)
Private Eye (affiliated with Public Records Now)
Profile Engine
Pub360
Public Records Now
PublicBackgroundChecks.com
Publicrecords.com (affiliated with Intelius)
RapLeaf
Reverse Phone Lookup
RIVoters (also Ohiovoters, Colorado, CT, Delaware, FL, OK, Utah)
Savings.com
Search Bug
Sorted By Name
Spock.com (mirror for ZabaSearch)
Spoke
SwitchBoard.com ( WhitePages affiliate)
Unlimited Background Checks (affiliated with Intelius)
US Search
USA People Search
Valley Yellow Pages (MYYP.com)
Voter Lists Online (Aristotle)
Waatp (Who Are All These People)
Webcrawler
Whitepages
Who’s Arrested
Wink(WINK BACKGROUND CHECK,Wink Technologies, Inc)
WYTY
Yasni
Yatedo
Yellow Pages
Yellow Pages
ZipLocal
ZipOffenders
ZoomInfo
Abicus (Cactus)
Ameridex
Ancestry.com (associated with Ancestry.ca, Ancestry.co.uk, Ancestry.com.au, Ancestry.de, Genealogy.com, FamilyTreeMaker.com, RootsWeb.com)
Ancientfaces
BlockShopper
Cell Phone Registry (CIS)
CellPhoneRegistry.com
CIS Nationwide
Civil Records.org (affiliate of CIS)
Corporation Wiki
Court Records.org
Criminal Pages
Criminal Records
Criminal-records.org (Procash)
Datadetective.com
Dex Media (AKA SuperMedia.com, Superpages.com, EveryCarListed.com, Localsearch.com, SuperGuarantee.com, DirectoryStore.com, DexOne.com (includes Dex Online), DexKnows.com, DexPages.com and DexDigital.com)
DexKnows.com
DexOne.com (includesDex Online)
DexPages.com
Divorce Records
Email 411 (CSI Nationwide)
First Advantage
Genealogy.com (affiliated with Ancestry.com)
Governmentregistry.org
Govregistry.us
GovWarrantRecords.org
I-Behavior
Info Registry
Info Tracer
Innovis
InteliGator
intelligator.org
iSearch (Zaba Search mirror)
JustMugShots
KnowX (affiliated with LexisNexis)
LexisNexis
Localsearch.com
LocatePeople
Marriagerecords.org
Mugshots Planet (based in Hong Kong)
Numberinvestigator.com
People Fact Finder
People Finder: Instant Online Records Retrieval (CIS
Affiliate)
PhoneRegistry.com
Public Records Checks
Public Records Guide
Public Records Spy
Publishers Clearing House Reader?s Digest
Radaris (associated with Humanbook)
Records Authority
Reverse Genie
Reverse Mobile (CIS Nationwide affiliate)
Reverse Number Database
Reverserecords.org
SentryLink
StateRecords.org
StateRegistry.org
Tenant Detective (affiliated with Infopay)
US Identify
Valassis Communications, Inc. associated with RedPlum.com
ValPack.com (Cox Target Media)
Veromi.net
WebInvestigator.org
Webstigate.com
World Pages (same as yellow book)
Yellow Book
ZabaSearch (affiliated with Intelius)
BackgroundCheckSolutions
CIA Data (Consumer Intelligence Agency)
Credential Check
Criminal Background Records
ecriminalrecords.com (BCS)
EmployeeScreenIQ
Equifax
GoodHire
HireRight/GIS (Retail Theft Database)
ID Analytics
IntelliCorp
LocatePLUS
Merkle inc.
MIB
MyBackgroundCheck.com
National Tenant Network
PeopleG2
The Work Number (Equifax)
Transunion
555-1212.com
Abika (Accusearch)
Acculist
AmericaList
Ancestor Hunt
Ancestral Findings
Background Check Gateway
Background Check International (BCI) (Based in Nigeria)
Background Records Registry
Background-Check-Only.com
BackgroundFinder.com
Backgroundsearcher
Bankruptreport.com
BCS Background Screening, LLC
Birth Database (affiliated with Bored.com)
Cell Reverse Search
Confi-check Inc
Criminal Screen
Criminal Watch Dog
CupidScreen
DeadBeatCustomerList
Deadbeattenant.net
Directory Assistance Plus
Do Not Rent To.com
DocuSearch Investigations
e-Merges
Easy Background Check
Easybackgrounds.com
eFind Out the Truth (formerly affiliated with OnlineBackgroundChecks.com, CellularPhoneRecords.com, eMailBreaks.com)
Enformion
FindPublicRecords.com
Government-Records.org
Govpolicerecords
HD Publishing
hexum criminal search
HostGator
Identity Crawler
InfoPay
Integrascan
Integrity (affiliated with Aristotle)
Intel Registry
ip2location
License Plate Search
LLC Haines Criss+Cross
LookupExpert
Lost People
LssI Data
Marriage Database
Melissa Data
Mugshots.mobi
Mugshots Online
National Background Check
NationalPublicData
NumberGuru
Online Reverse Lookup
OnlineSearches (publicrecords.onlinesearches.com)
OPENOnline
People Search (http://easytolocate.com/)
PeopleSearch.net
Phones Book
pipl
Plus Address.com
Property Record Pro.com
Public Data
Public Record Results
Public Record Site
Public Records Service (SmartName)
PublicRecordCenter
Recorded Future
Records.com
Reunion.com (Part of MyLife.com)
Reverse Phone Check
Reversemobile.com
Reversephonecheck.com
ReversePhoneferret.com
Search Detective (affiliated with Gov-Records)
Search Systems
Skip Ease
Snoopstation.com/
SSNValidator
Suarez Corporation Industries
Super Pages
SuperGuarantee.com
Superpages.com
Tenancy Bureau Inc
The Landlord Protection Agency
The People Finder
Thepublicrecords.com
TheRetailEquation
TLO Online Investigative Systems (used to be Merlin Information Systems)
Top People Finder
Top People Search
Trial Pay
US Reverse Phone Check
USA PhoneInfo (associated with USA People Directory )
USA Trace
Vebidoo
VerifyPhone.com
Vital Search Worldwide
Voter Factory
W9R.com
Who Called Us
World Vital Records
Your Own Private Eye
ZabbyDabby.com
Busted Mugshots
CoreLogic
Court Click
DOB Search
FindNameByCellphoneNumber
Free Background Checks Mirror for Govregistry.us)
freecellsearch.com
Full Name Directory (Associated with DOB Search)
IdentityPi.com
Infogroup Inc.
Information Technologies, Inc.
My Family ( associated with Ancestry.com)
net-vestigator
Official USA Records
Omnitrace
Peoplesearchaffiliates.com (Phone Detective and
emailfinder)
Public Arrest Records
Publicrecordssearchonline.org
RealAge
Roots Web (Associated with Ancestry.com)
SSN Info 288
TheftDatabase
USADATA
USDataCorporation
Verispy
Voter Lists Online
(affiliated with Aristotle)
YellowBot