UI kits (user interface kits) are the visual language for user interfaces. UI kits are often used to build beautiful interface designs for the web and mobile.

Most of the popular applications have built their UI kits to keep things balanced and uniform. UI design kit is the random set of possible basic UI elements in a design. They also contain experimental UI patterns and many color variations.

They can used for references, to build thematic UI designs. The great use of UI designs is, you can do experiments on your designs pretty easy. You can test new color pallets and typefaces pretty well on these Kits.

CSS Author is one of the best providers of Free UI Kits. We have a great collection of PSD designs in our websites you can check them here. In this post, we have collected the best Free UI kits released on 2015. All these kits are free to use. You can use them to build unique UI designs for your web or mobile applications.

We are Adding latest Free UI Kits from 2016 in this post.

Web and Mobile UI Kit PSD

Sweety iOS UI Kit PSD

Sweety iOS UI Kit PSD

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BubbleGum Free UI Kit PSD

BubbleGum Free UI Kit PSD

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Spire UI Kit PSD

 Spire UI Kit PSD

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Tiga Free UI Kit PSD

Tiga Free UI Kit PSD

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Stella – Free UI Kit PSD for Blogs

Stella - Free UI Kit for Blogs

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Free Eppe UI Kit

Free Eppe UI Kit

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Guacamole UI kit (PSD, Sketch)

Guacamole UI kit

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Free UI Kit PSD

Free UI Kit PSD

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iOS 9 UI kit (PSD, Sketch)

iOS 9 UI kit

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Vers UI Kit PSD

 Vers UI Kit PSD

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Free Relate UI Kit (PSD, Sketch)

Free Relate UI Kit

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Overlap UI Kit (PSD, AI)

Overlap UI Kit

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Moonstone Wallet- Free Mobile UI Kit (PSD, AI, SKetch)

Moonstone Wallet- Free Mobile UI KitMoonstone Wallet- Free Mobile UI Kit

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Kauf Web UI Kit PSD

Kauf Web UI Kit PSD

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Monet UI Kit

Monet UI Kit

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EarthShift Free UI Kit PSD

EarthShift Free UI Kit PSD

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Deadline UI Kit PSD

 Deadline UI Kit PSD

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DoEpicShit Free UI Kit PSD

 DoEpicShit Free UI Kit PSD

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Balkan UI Kit PSD

Balkan UI Kit PSD

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Landing Free UI kit (PSD, SKetch)

Landing Free UI kit

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Free UI Kit PSD

 Free UI Kit PSD

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Otenteko eCommerce UI Vector Components (AI)

Otenteko eCommerce UI Vector Components

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Monochrome UI Kit PSD

Monochrome UI Kit PSD

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Modern Flat UI Kit PSD

Modern Flat UI Kit PSD

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Retina Web UI Kit

Retina Web UI Kit

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Free Android Launcher UI Kit PSD

Free Android Launcher UI Kit PSD

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Ocean – Free Mobile UI Kit PSD

ocean - Free Mobile UI Kit PSD

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The Mall – Mobile UI kit PSD

The Mall – Mobile UI kit

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Aerea – Free UI Kit PSD

Aerea - Free Ui Kit PSD

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Free Music UI Kit (AI, PSD)

Free Music UI Kit

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Monet – Free Mobile UI kit PSD

Monet - Free Mobile UI kit PSD

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BeStories UI Kit (PSD, Sketch)

BeStories UI Kit

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Flowerkit Free UI Kit PSD

Flowerkit Free UI Kit PSD

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Free Health UI Kit PSD

Free Health UI Kit PSD

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Free Flat UI kit PSD

Free Flat UI kit PSD

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Slides – Huge Free UI Kit (SKetch, PSD)

Huge Free UI Kit

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Avital Mobile UI Kit (SKetch, PSD)

Avital Mobile UI Kit

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Free Mobile UI Kit PSD

Free Mobile UI Kit PSD

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Free UI Starter Kit PSD

 Free UI Starter Kit PSD

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Shopmate – Free E commerce UI Kit (PSD, Sketch)

Shopmate

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Food Recipes Free UI Kit PSD

Food Recipes Free UI Kit PSD

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Free UI Starter Kit PSD

Free UI Starter Kit PSD

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Gaming UI Kit PSD

Gaming UI Kit PSD

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Free UI kit PSD

Free UI kit PSD

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Free UI Elements PSD

Free UI Elements PSD

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Mayssam Arabic UI Kit PSD

Mayssam Arabic UI Kit

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Elton UI Kit PSD

Elton UI Kit PSD

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Web UI PSD

Web UI PSD

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Free Social User Interface Kit PSD

Free Social User Interface Kit PSD

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Free UI Kit PSD

Free UI Kit PSD

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Carlyle UI Kit PSD

carlyle ui kit psd

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Vivid Soft Material UI Kit PSD

Vivid Soft Material UI Kit PSD

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Blue UI Kit PSD

Blue UI Kit PSD

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Free Swiet Ecommerce UI Kit PSD

free-swiet-ecommerce-ui-kit-psd

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App UI Kit PSD (Mobile)

Free Music Player UI Kit PSD

Free Music Player UI Kit PSD

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Ventas App UI Kit PSD

Ventas App UI Kit PSD

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Chat App Free UI Kit PSD

Chat App Free UI Kit PSD

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Notification App UI Kit PSD

Notification App UI Kit PSD

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Trend – Free Social and E-commerce iOS App UI Kit PSD

Trend

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Wireframe UI Kits

Starter Wireframe Templates (Sketch)

Starter Wireframe Templates

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Sketch Fluid Wireframe Kit

Sketch fluid wireframe kit

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Platforma iOS and web wireframe kits

Platforma iOS and web wireframe kits

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Savvy – iOS Wireframe Kit for Sketch

Savvy - iOS Wireframe Kit for Sketch

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Carbon – Free Material Wireframe Kit (PSD, SKetch)

Carbon - Free Material Wireframe Kit

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Material Design Wireframe Kit (SKetch)

Material Design Wireframe Kit

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Free Moon Wireframe kit (SKetch)

Free Moon Wireframe kit

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Dashboard UI Kits

YONO – Free Dashboard UI Kit PSD

YONO - Free Dashboard UI Kit PSD

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Personal Dashboard UI Kit PSD

Personal Dashboard UI Kit PSD

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Free UI Kit PSD for Dashboard

Free UI Kit PSD for Dashboard

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Free Admin DashBoard UI PSD

Free Admin DashBoard UI PSD

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HTML & CSS UI Kits

Paper Kit – Free Bootstrap UI Kit (HTML & CSS)

 Paper-Kit

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Drunken Parrot UI Kit (HTML, PSD)

Drunken Parrot UI Kit

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Mango UI Kit

mango ui kit

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eShop – Bootstrap HTML UI Kit

eShop – Bootstrap HTML UI Kit

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Sketch UI Kits

Based UI Kit for Sketch

Based UI Kit for Sketch

Download

Indeux – Fashion Store UI

Indeux - Fashion Store UI

Download

iOS 10 UI Kit for Sketch

iOS 10 UI Kit for Sketch

Download

iOS 10 GUI

iOS 10 GUI

Download

Bookworm UI Kit

Bookworm UI Kit

Download

Facebook Analytics UI Kit

Facebook Analytics UI Kit

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Google Inbox UI

Google Inbox UI

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Free Gaming UI Kit for Sketch

Free Gaming UI Kit for Sketch

Download

Puzzles iOS 10 UI Kit

Puzzles iOS 10 UI Kit

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Snapchat UI kit

Snapchat UI kit

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Android N UI Kit for Sketch

Android N UI Kit for Sketch

Download

Messaging Design Kit

Messaging Design Kit

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Oxygen – Free Starter UI Kit

Oxygen - Free Starter UI Kit

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Casa – Free Sketch UI Kit

Casa - Free Sketch UI Kit

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Booking Cap App UI Kit

Booking Cap App UI Kit

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Tapnews – Free Mobile UI Kit

 Tapnews - Free Mobile UI Kit

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The Next Random UI Kit

The Next Random UI Kit

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Free Mobile UI kit for Music Apps

Free Mobile UI kit for Music Apps

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Mercatus – Free mCommerce UI kit

Mercatus - Free mCommerce ui kit

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Summer UI Kit

Summer UI Kit

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Hofmann – Free Responsive UI Kit

Hofmann – Free Responsive UI Kit

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Minimal UI Kit

Minimal UI Kit

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Free Mobile UI kit

Free Mobile UI kit

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Free UI KIT for Sketch

Free-UI-KIT-for-Sketch

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Free Flat Travel Blog UI Kit

Free Flat Travel Blog UI Kit

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Mini UI kit

Mini UI kit

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Marathon UI Kit

Marathon UI Kit

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Windows Phone 8.1 UI Kit

Windows Phone 8.1 UI Kit

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Move – Free Mobile UI Kit for Sketch

Recipes App UI Kit

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Move – Free Mobile UI Kit for Sketch

Move

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Crisp – Free Ecommerce UI Kit for Sketch

Crisp - Free Ecommerce UI Kit for Sketch

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Minimal UI Kit

 Minimal UI Kit

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Tilt UI Kit

Tilt UI Kit

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Bootstrap 4 UI Kit for Sketch

Bootstrap 4 UI Kit for Sketch

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Stencil – Free Sketch UI Kit

 Stencil Free Sketch UI Kit

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Delicious – Free Mobile App UI Kit (Sketch)

Delicious - Free Mobile App UI Kit

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Material Design UI Kit

Material Kit

Material Kit

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Free Material UI Kit PSD

Free Material Ui Kit PSD

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Google Material Design UI Kit PSD

Google Material Design UI Kit PSD

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Material Design UI Kit for Bootstrap

Material Design UI Kit for Bootstrap

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Smart Watch UI Kit

WatchOS 2 Human Interface Design Kit (PSD, Sketch)

WatchOS-2-Human-Interface-Design-Kit

Download

Free Sample UI Kits

Mapogo UI Kit (PSD, AI, Sketch)

Mapogo UI Kit

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Creastore UI Kit (Sketch)

Creastore UI Kit

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Lando UI Kit

Lando UI Kit

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Blogant UI Kit

Blogant UI Kit

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Milestone UI Kit

Milestone UI Kit

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Inception UI Kit PSD

Inception UI Kit PSD

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Placed UI Kit PSD

Placed UI Kit PSD

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Fair UI Kit (PSD, Sketch)

Fair UI Kit

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Portland UI Kit PSD

Portland UI Kit PSD

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Shopmate – UI kit for the Shop

Shopmate

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Module UI Kit (PSD, SKetch)

Module UI Kit

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Barni for Eshop (PSD, SKetch)

Barni for Eshop

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Canvas UI Kit

Canvas Ui Kit

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Navigation Style – Sketch UI Kit & Wireframe (Sketch)

Sketch UI Kit & Wireframe

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Kama iOS UI Kit (PSD, SKetch)

Kama iOS UI Kit

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Chameleon UI Kit (PSD, SKetch)

Chameleon UI Kit

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Eostre Ui Kit PSD

Estore UI Kit PSD

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