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invisionapp

Powerful design prototyping tools

Sketch

The digital design toolkit

Blender

Blender is the free and open source 3D creation suite.

Affinity Designer

专业创意软件

5百丁

中国领先的PPT模板共享平台

tretars

The best free Mockups from the Web

优品PPT

高质量的模版，而且还有PPT图表，PPT背景图等资源

publicdomainarchive

New 100% Free Stock Photos. Every. Single. Week.

hdwallpapers

High Definition Wallpapers & Desktop Backgrounds

imcreator

A curated collection of free web design resources, all for commercial use.

gratisography

Free high-resolution pictures you can use on your personal and commercial projects, free of copyright restrictions.

negativespace

Beautiful, High-Resolution Free Stock Photos