American Research Bureau
Provides nationwide skip tracing and asset location for professionals in the banking, insurance, legal and collection communities, as well as individual civil litigants.
http://www.arbi.com

Comprehensive Background Checks - YourOwnPrivateEye.com
Performs comprehensive background and asset checks for law firms, debt collectors and civil judgment holders.
http://www.yourownprivateeye.com

Judgment Collection Specialists, Inc.
Provides nationwide asset search and judgment recovery services for judgment holders, attorneys, private investigators and financial institutions.
http://www.jcsusa.com

Windsearch
Provides multi-platform support services for the legal, investigative and debt collection/liquidation industries, as well as support services for judgment collection.
http://www.888windsearch.com/main.html