A commanding interface can provide an efficient computer interface for users of assistive technology by focusing on the tasks that an application can perform, rather than on the interface the application exposes. The commanding interface can provide a search mechanism that searches for and presents functions or functionality in response and dynamically updates results as the search query is entered. Additionally, the commanding interface can prioritize search results based on contextual data, including prior search terms, prior actions, and the context of the user's interaction with the application program. The commanding interface can enable the user to filter the functions and functionality presented through the commanding interface according to types of user-performed activities for which such functions would be utilized, patterns, or heuristically determined associations.