叶子库

tretars

The best free Mockups from the Web

PPTMind

分享高端ppt模板与keynote模板的数字作品交易平台

PPT+

PPT加直播、录制和分享—PPT+语音内容分享平台

优品PPT

高质量的模版，而且还有PPT图表，PPT背景图等资源

OfficePLUS

OfficePLUS，微软Office官方在线模板网站！

publicdomainarchive

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

hdwallpapers

High Definition Wallpapers & Desktop Backgrounds

jeshoots

New Free Photos & Mockups in to your Inbox!

magdeleine

HAND-PICKED FREE PHOTOS FOR YOUR INSPIRATION

skitterphoto

a place to find, show and share public domain photos

mmtstock

Free photos for commercial use

skitterphoto

Free Stock Photos for Creative Professionals