This document describes techniques and apparatuses enabling thumbnail-image selection of applications. In some embodiments, these techniques and apparatuses enable a user interface having selectable thumbnail images for applications not currently exposed on a display. The techniques and apparatuses may enable selection of this user interface through a simple gesture that is both easy-to-use and remember. Further, selection of applications not currently exposed on the display may be selected through thumbnail images representing each application's application interface as it will appear on selection.