Although the need for developing software using Open Source Software(OSS) has been increasing, there is no measurement to select a suitable and qualified OSS which is proper property to develop. In this study, it is suggested whom wants to develop software by using OSS that a quality model to choose the best quality which is suitable characteristics of development.To conduct the proposal quality model:1. Select 23 development companies which have experience in developing software with OSS. 2. Sample among the 23 companies which has ISO/IEC 9126 certification and additional characteristics by the order of priority 3. From top-15 sub-characteristics, group, combine and classify by characteristics. Finally, we arrive at the quality model abstracted from 4 main-characteristics and 10 sub-characteristics. The quality model provides the criteria for measuring quality to select OSS and fundamental researching metrics and indicates the applicable method for practical and basic information.

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