本刊从今年开始,陆续向读者介绍了一些优秀共享软件,受到了广大读者的欢迎和喜爱,不少读者来信索取自己感兴趣的软件,同时还希望了解更多有关共享软件方面的知识。下面就谈谈共享软件的分类、来源、发展历史及价值所在。关于共事软件的注册及一般许可证协议方面的内容,读者可参阅本刊今年第一期《共享软件的获取、使用和注册》一文。 Since the beginning of this year, we have introduced some excellent sharing softwares to our readers one after another, which have been welcomed and loved by readers. Many readers have obtained letters of interest from our readers and also want to know more about sharing software. Here to talk about the classification of shared software, sources, development history and value. Readers can refer to the first issue of this year’s article on “Access, Use and Registration of Shared Software” for the registration of co-operative software and general license agreement.