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
Texture Haven是一个免版权纹理的网站，分辨率高达8k，完全免费。100% Free High Quality Textures for Everyone
优秀英文字体精选。Archive of freely downloadable fonts. Browse by alphabetical listing, by style, by author or by popularity.
它是国外免费分享网站,大量版权过期而进入公有领域书籍的一项协作计划。
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..
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!
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
