CuteStockFootage

提供免费的640×480视频剪辑，可以购买的HD和4K素材。Free Stock Footage and Commercially Cleared Royalty Free HD & 4K Stock Footage..

在线图片压缩，免费下载。Picdiet is a fast and robust online batch image filesize compressor written in JavaScript, images are compressed in your browser, completely free

免费的音效素材搜索，包含的素材种类非常多，特别适合经常做特效视频。Search the web for free sounds and sound effects

图片可免费商用，去做点了不起的事吧！Startup Stock Photos are free startup, office, and tech stock photos ready for your next project. Used by millions. Make something awesome.

优秀英文字体精选。Archive of freely downloadable fonts. Browse by alphabetical listing, by style, by author or by popularity.

开源的化学分子式编辑、查看、绘制工具，包含了化合物、蛋白质、光谱数据库。MolView is an intuitive, Open-Source web-application to make science and education more awesome!