1. A computer program product tangibly embodied in a computer-readable storage medium and storing instructions that when executed by a processor perform operations, comprising: receiving, by a computing device, an orally-provided voice query and generating data that represents content of the voice query; providing the data by the computing device to a server system; receiving, by the computing device and from the server system, a textual query that has been determined by a speech recognizer at the server system to be a textual form of at least part of the data; determining that the textual query includes a carrier phrase of one or more words that is reserved by a first third-party application program installed on the computing device; selecting the first third-party application, from a group of one or more third-party applications, to receive all or a part of the textual query; and providing, by the computing device, all or a part of the textual query to the selected first application program.