OpenSearch is a collection of technologies that allow publishing of search results in a format suitable for syndication. It is a way for search engines to publish their search results in a standard and accessible format. OpenSearch 1.0 was unveiled in March, 2005. A draft version of OpenSearch 1.1 was released during September 2005, and is not yet generally supported.

OpenSearch consists of: # OpenSearch Description Documents: XML files that identify and describe a search engine. #* OpenSearch Query Syntax: describe where to retreive the search results # OpenSearch RSS (protocol) (in OpenSearch 1.0) or OpenSearch Response (in OpenSearch 1.1): format for providing open search results. # OpenSearch Aggregators: Sites that can display OpenSearch results.

OpenSearch Description Documents list search result responses for the given website/tool. Version 1.0 of the specification only allowed one response, in RSS format; however, version 1.1 provides support for multiple responses, which may be in any format. RSS and Atom (standard) are the only ones formally supported by OpenSearch aggregators, however other types, such as HTML are perfectly acceptable.

===Search engines and software that support OpenSearch:===

===Directories of OpenSearch feeds===

===Plugins for making blog content available to OpenSearch APIs===

===See Also===

===Futher reading===