优社Uther
优社（Uther.cn）是一个专注于UI领域的素材资源共享平台！旨在为UI设计师提供网页、H5、APP、小程序、图标、动效等UI素材，并逐步打造成为一个UI素材交流平台。
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Yesicon
223 icon sets with 290k+ icons, search across icon sets in multiple languages, rich filtering by type and style, quick customization of icon colors, sizes and code styles, one-click copy and download for developers and designers
Remix Icon
Remix Icon is a set of open source neutral style system symbols elaborately crafted for designers and developers. All of the icons are free to use for both personal and commercial.
KISSPNG
KISSPNG provides millions of high quality exclusive free png images . Free and Unlimited Downloads.
Worldvectorlogo: Brand logos free to download
Worldvectorlogo has the largest SVG logo vector collection. All logos work with EPS, AI, PSD and Adobe PDF. No account and unlimited downloads for free.