From their site: Welcome to the Internet UPC Database. This free service is run as a hobby of mine. 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.
The following is a list of SDKs from our SDK directory that matched your search term. Though your definition of an SDK may differ, in our world, we define SDKs as platform- specific tools for consuming existing APIs of the sort we list in our API directory. For example, the Ruby SDK for consuming the Twitter Ads API. If you think an SDK, API, or other asset is missing from our directory, be sure to check our guidelines for making contributions to ProgrammableWeb.