The best alternatives to Webframe are AppLaunchpad, Muzli, and Design Hunt. If these 3 options don't work for you, we've listed a few more alternatives below.
AppLaunchpad is an android & ios screenshot generator to create customized App Store & Google Play images for your app & export them in resolutions Apple & Google require.
A set of web-based design tools used by 100K app developers to accelerate their app growth.
Muzli is a new-tab browser plugin that instantly delivers relevant design stories and inspiration.
Muzli instantly delivers cutting-edge design projects and news each time a new tab is open in your browser.