扁平化的UI现在很流行的，一小批设计资源，包括图标、网页、手机等内容，大多数均可以免费下载到。
Free Business Flat Icons Download
Free Flat Facebook Social Media Mockup
Velocity 6 – Landing Page Free PSD
Free Watercolor / Paint Background Texture
Free Flat iWatch Mockup
Free Awesome 22 Flat Vector Sea Icons
Simple Falcon Iconset
Creative Landing Page Freebie
30 User Interface Flat Icons Set
Free Calculator UI (.sketch)
Flat Single Product Page Design
Free Mouse app icon (PSD)
Free Portfolio PSD Template
Free Material Dashboard Free PSD
Flat iPhone Vector Mockup Set
Free Flat Restaurant UI App
Free Flat iPhone 6 & 7 App UI Design Screen Mockup PSD
Free Material Design Backgrounds
Free Flat Workspace Illustrations
Free Ecommerce Landing Page Template (PSD)
Free Flat iPhone 7 Templates (Sketch)
Free Weather App UI
Free Flat PSD Landing Page Template
Free Cloud – After Effects
Free Corporate Agency Web Template PSD
430 Hand Gesture Icons Freebie
Free Baby Icons
Free Flat Login Form Template
Flat File upload – free Sketch source
Free Magazine Style Website Template
50 Flat Icon Set
LiquidPro – Sketch UI Kit – Free Download
iPhone Front View (fireworks Vector)
Cover Phoenix Startup Freebie
iPhone 7 and Google Pixel Flat Vector Mockup (Free)
