Lily is an open source, browser-based, visual programming environment written in JavaScript. Lily enables users to build programs graphically by connecting functional modules to fetch and direct the flow of data, play sound or video, add animation or interactivity, and display results. Lily programs can be shared with other Lily users, installed as Firefox add-ons or run as standalone apps using XULrunner.

lily的出现象征着net.art某些思路的变革，它将网站模式扩展，基于网络但又不限于网络。
想到的模式，利用lily完成firefox的add-ons，将add-ons作为控制器，貌似processing也能完成类似过程，但是基于java的processing在web的表现能力还是较逊色。