「ZhiMap」是一款功能丰富、便捷好用的免费在线思维导图工具，更是一个知识分享与学习的社区;如果你用过很多思维导图的话，对比其功能特色，你会发现，这款免费的导图比收费的还要……
create QR codes for free (Logo, T-Shirt, vCard, EPS)
JPEGmini - The Photo Optimization Tool Trusted by Tens of Thousands Image Perfectionists
Optimize your images with a perfect balance in quality and file size.
图片压缩，Compress and compare images with different codecs, right in your browser
小画桌是一款轻量级的在线实时协作白板，内置音频加密传输，适用于团队远程会议、头脑风暴、UI评审等场景
