Download MockupScreens Free Trial
Latest version is 4.95, released on Jun 1, 2016.
Mountain Lion and later, including Yosemite and El Capitan.
OSX 10.9 Mavericks+: First time be sure to Ctrl+click and then Open.
Windows 10, 8, 7, Vista, XP and 2000.
Available downloads are for Windows and Mac OS X only.