Application usage is profiled based on application streaming. Code pages of multiple applications are streamed from a server to multiple client computers (endpoints) for execution. The streaming of the code pages is monitored, and usage data is collected such as which pages are streamed to which endpoints, under what circumstances and when. By referencing the streamed code pages and the underlying source code, the code pages are mapped (at least approximately) to corresponding application features. The collected usage data usage and the relevant mapping are analyzed, to create application usage profile data for streamed applications. The application usage profile data can include such information as how often, when, where and by whom application components are being executed, as well as which components cause errors, are most popular, confuse users, etc.