Systems and methods offer a search system with third-party provided search applications that are triggered in response to specified queries and run at the search system. For example, a method may include determining that a query triggers a third party search application hosted at the search system, executing the third party search application at the search system using computer-instructions obtained from the third party to generate and format a third-party formatted answer for the query, and providing the third-party formatted answer as a search result for the query. The third party may provide the query template, parameter attributes, if any, and the third party formatted answer. The third party search application is stored at the search system and may include the query template, a data store, the parameter attributes, and computer-instructions for accessing the data store using the parameter.