zTree 是一个依靠 jQuery 实现的多功能 “树插件”。优异的性能、灵活的配置、多种功能的组合是 zTree 最大优点。专门适合项目开发，尤其是 树状菜单、树状数据的Web显示、权限管理等等。
zTree 官网 ：http://www.ztree.uzh.ch/en.html

The z-Tree program was initially developed at the University of Zurich by Urs Fischbacher. Now, it is a joint project of the University of Zurich.

In z-Tree, you can define and conduct experiments. You can program a broad range of experiments with z-Tree, including public goods games, structured bargaining experiments, posted-offer markets or double auctions. The programming of z-Tree requires a certain amount of experience. There after, the effort required for conducting experiments is minimal: An experimenter with some experience in z-Tree can program a public goods game in less than an hour and a double auction in less than a day.