Here’s a UI kit including many widgets featured by clean design. Free PSD designed and released by David Minty.
Here is a small UI kit including some login/signup screens for iOS. Free PSD released by Freecreative.
Login UI kit for iOS
Yosemite UI Kit for Sketch 3. All UI elements (well, besides the OS X 10.10 Icons) have been redrawn and restyled as accurately as possible.
Yosemite UI Kit for Sketch 3
Re is a free UI kit for apps including many useful elements. Free PSD designed and released by Anton Skugarov.
Re – Free UI kit for apps
A free dashboard user interface including custom icons and created with Photoshop vector shapes. Free PDS designed by Nicolaskayser.
Dashboard UI – Free PSD
Here is the PSD of Twitter new user interface made with vector shapes. Free PSD created and released by Riyadh Gordon.
Twitter new UI PSD
Here is a dashboard user interface including many useful elements. Free PSD created and released by Muharrem Şenyıl.
Full dashboard UI PSD
Superminimal is a minimal UI kit including several useful elements. Provided in both light and dark versions. Free PSD by Satya Kumar.
Superminimal – Free UI Kit
Here is a colorful UI kit plenty of useful elements. Free PSD designed and released by Unity.
Colorful UI kit PSD
A clear and minimal UI kit useful for inspiration or in case you need a starter to design your app. Free PSD released by Vincent Tantardini.
