Systems and methods for multitasking using touch-sensitive displays are disclosed. An example method includes: displaying a first application on a touch-sensitive display (TSD) of an electronic device; detecting, via the TSD, a swipe gesture that moves over part of the first application; in response to detecting the swipe gesture, displaying an application selector with a set of affordances, and the application selector is (i) displayed in a predefined portion of the TSD and (ii) overlays at least a portion of the displayed first application; detecting an input at an affordance of the set of affordances; in response to detecting the input: (i) ceasing to display the application selector; (ii) displaying a second application corresponding to the selected affordance in the predefined portion that was previously used to display the application selector; and (iii) resizing the first application to occupy a remaining portion of the TSD adjacent to the predefined portion.