Iconscout - Design Resource Marketplace.
User Inyerface - A painful illustration of bad UX
Office Club Illustration pack - Whether you’re creating a website or mobile app, showcasing a portfolio, publishing a blog, or an e-commerce store — Office Club’s 100 illustrations and designed art directions help you create the best possible products.
How I Experience Web Today - Realistic web search experience
Craftwork - A collection of User Interface resources made by Craftwork
Checklist Design - The best UI and UX practices for production ready design.