Fludish Sketch UI Kit is high quality pack based on fluent design system, includes 50+ iOS screen templates designed in Sketch, 9 most popular categories (Sign In / Sign Up, Walkthroughs, Menu, E-commerce, Profile, Media, Statistics, Messages, Social).

CLLIO UI Kit. A Modern & clean ui kit which includes more 100+ elements in categories: blog, eCommerce, form, widgets & media, header & footer, slider. CLLIO is compatible with Photoshop & Sketch.

Introducing Lil UI Kit for Sketch. Completely re-built in Sketch utilizing the power of symbols to make your workflow even easier. Lil UI Kit for Sketch has been designed for simplicity and consistency to help you create a unique web experience in your next project. Great for fast wireframing, prototyping or converting over to CSS, this UI Kit will get you started quickly with its clean appearance and style.

https://creativemarket.com/lilsquid/1199210-Lil-UI-Kit-Sketch-UI-Library

A high quality user interface toolkit for web, designed in Sketch. Contains more than 100+ elaborate layouts & 12 Ready-to-use templates. Suitable for all kind of modern projects: Landing and Product pages, Blogs, Portfolios, Web stores, Business and Corporate websites, Marketing & advertising campaigns. Use Replacer as a starting point in your next project. Choose category and layout, customize any UI component, shape it at your own will. Boost your workflow with pre-designed layouts & templates. Stay cool & steady!