【摘要】 该文在分析协同软件开发工具的需求和关键技术的基础上，介绍并讨论了一些协同软件的研究状况和国外的系统、研究趋势，力图在高度概括的基础上对每个研究的热点给予一定的介绍和剖析。对国外系统的介绍中突出了各个系统的特点和优点，形成了一定的比较。更多还原

【Abstract】 We first investigate the requirements for collaborative systems development toolkits and the principles and technologies in the process of developing collaborative systems.Our focus is primarily on the characteristics of such systems,which are different from those of common distributed systems and interactive software.We also investigate several representative toolkits explored by other researchers and institutes.Carefully investigated the design techniques of this toolkit,we primarily focusing on the new ideas they introduced and the characteristics and advantages these system involve.更多还原