Hydraproject - The Hydra Project. QRhacker.com - Pimp your code! Creating OpenSearch plugins for Firefox. Firefox supports the OpenSearch description format for search plugins.
Plugins that use OpenSearch are compatible with Firefox, Internet Explorer, and Chrome. Because of this, they are the recommended format for use on the web. Firefox also supports additional features not included in OpenSearch, such as search suggestions and the SearchForm element. XXI.