Open Icecat is an Open Content project under the Open Content License in which a worldwide open catalogue is created for product information. Editors are participating manufacturers. The users of the product content are distributors, resellers, retailers, comparison websites or online shopping directories, enterprise resource planning systems or the manufacturers themselves.
Open Icecat is as an open catalog, not to be confused with commercial catalogs like offered by Icecat Inc (Full Icecat), Gfk/Etilize and Cnet.
Open Icecat began formally in December 2005 with 20 participating IT manufacturers. Among the earliest contributors are Hewlett-Packard, Toshiba, IBM and Lenovo. As of March 2007, this number has grown to more than 90 manufacturers, including participants from consumer electronics like Sony, Philips and Kodak, and the telecom industry.
The most downloaded open source webshop - PHP & MySQL based osCommerce - provides an Icecat contribution. Also with regard to other open source webshops, like Batavi, PrestaShop, Zen Cart and Magento, integration efforts are noted. Further, a number of integrations are made by proprietary ASP solution providers like Stock in the channel, Emini, Web2Biz, MyCOP/adfontes, QuoteWerks, bInTime, RightClick, Wicecat, xtCommerce and Roy Duineveld.
IceCART is a freeware plugin to connect Zencart to Icecat. With this tool you can easily associate the Icecat description to your Zencart products in the shop.
Wicecat is a plugin that connects Prestashop with Icecat, it can be adapted to any shopping cart to update the technical information directly from Icecat.
With the Open ICEcat Node.js package  you can read the worldwide product information data from Icecat within your Node.js project.
- GTIN, including former European Article Number and Universal Product Code
- HTML for the ASP/URL variant of the catalogue
- ISO 639-1 language codes
- ISO 3166-1 alpha-2 country codes
- UNSPSC for categorization
- XML, including an open catalogue DTD and XSD
- Atom (standard)
- "osCommerce Community Add-Ons". Oscommerce.com. Retrieved 2013-06-24.
- "Wicecat". Wasato.net. Retrieved 2013-06-24.
- "Icecat XML Processing with PHP". Roy Duineveld.
- "IceCat Integrations with Magento, PrestaShop, WooCommerce, OpenCart, Zen Cart".
-  Archived November 9, 2009, at the Wayback Machine
- "Icecat Node.js API". GreenCore.