Leo 是一个有趣的文本编辑器，提供的功能包括集成开发环境、项目管理工具以及音乐播放器等等。
A premier Integrated Development Environment, fully scriptable using Python. An outline-oriented, flexible filing cabinet holding any kind of data: including programs, web sites, text documents of all kinds, music, graphics and movies. The premier platform for creating, generating, studying, scripting, testing, and validating computer programs, web sites and any other complex data. A rendering engine for reStructuredText, web pages and svg graphics. A music and movie player. A sophisticated PyQt app running on Windows and Linux. 100% pure Python, running on Python 2.6 and above, including Python 3.x. Open Software, distributed under the MIT License. 
项目主页：http://www.open-open.com/lib/view/home/1350979164399