Internet UPC Database seems to be of use to many people for a variety of reasons.
Internet UPC Database
Welcome to the Internet UPC Database! This free service is run as a hobby of mine. The information indexed here seems to be of use to many people for a variety of reasons.
This site isn't limited to UPCs any more. First of all, the term 'UPC' has been deprecated; the new term is UCC-12. But the world has moved beyond that. As of January 2005, retailers in the U.S. are supposed to be able to support the EAN/UCC-13 code (the rest of the world has done this for years), which uses similar symbology, and one additional digit.
This site continues to be useful because people continue to contribute data. Please help keep that up. Every entry counts. If you're in a position to contribute more data than can be easily entered by hand, and you have permission to share it, please contact me by email so we can work something out. I can load an Excel spreadsheet or CSV file pretty easily.
If you have any feedback or suggestions, just send email.
The web site may be used for personal or commercial purposes. The data or services provided by the site may not be redistributed in any manner. All data supplied by this web site or any of its services remain Copyright (C) Robert C Fugina.
Any automated, programmed, or other non-human-interactive use of the web site should be limited to search engines (further rules defined by standard robot.txt file -- see Wikipedia Article) or through the provided RPC interfaces. No automated "screen-scraping" is allowed.
Only one account is allowed per person.
http://www.upcdatabase.com/