UI (user interface) kits are readymade UI elements that you can use in your design. UI kits come with PSD files and may provide additional stuffs like images. There may have several color variations. UI kits can drastically reduce the amount of time needed to finish a design. Let’s get introduced to 5 sources that provide beautiful UI kits.



1. Designmodo

Designmodo is extremely popular for everything design. The team develops web extensions as well. Designmodo offers fantastic UI kits. Some of them are free while you can also buy premium UI kits from them. Downloading a UI kit from Designmodo will require you to sign-in to the site. It’s really worth trying. 



2. UXPin

Uxpin has a rich portfolio containing high-profile clients like Microsoft, PayPal, Adidas etc. Uxpin creates elements for both UI and UX matters. You can start using their premium resources for free by signing up for a trial (no credit card required). Downloading freebie kit also requires you to provide your email address to Uxpin. 



3. UI8

Ui8 creates great UI kits, icons, Sketch products, wireframes, themes, presentation templates and so on. There is a pricing hint in its title. Ui8’s Individual product license costs only $8 each. If you plan to share the kit with your teammates, the license cost will increase. You can get access to all Ui8 products by purchasing the Ultimate Pass membership package with $278.



4. Pixel Buddha

Pixel Buddha has a good deal of free and premium design resources for the design community. Here you will find awesome UI kits, vectors, templates, effects, fonts, mockups and more. Pixel Buddha also accepts user submissions that means you can promote or sell your designs with the site. Interestingly, it lets you download the free items without logging in.



5. PixelKit

Pixelkit has a huge collection of cool UI kits you will like for sure. The team creates website UI, mobile app interface, icons and other graphic resources that you can use in your infographic projects as well. I liked the way that they use to show demos. Pixelkit demos appear to be functional and live until you click objects. There are two types of membership subscriptions- Designer and Developer. Both of them get you full access to Pixelkit UI kits. The Designer package costs $39 per year while the Developer plan goes to $89. The Developer plan provides HTML versions of the kits which is not available in Designer subscription. 



Do you have any favorite source for downloading UI kits? Which ones?