This paper presents an initial design of the "Plug-nAnalyze" framework for the tradeoff analysisin determining architecture alternatives that have different strength and weakness on quality attributes. The fiamework provides: i) architecture alternative negotiation aids among multiple stakeholders, ii) visualization aids for understanding complicated interactions and tradeoff dependencies among quality attributes, and iii) a general environment by integrating independent analysis methods by simply "plugging" and generating architecture options for fully "analyzing". Keywords Software Architecture,Tradeoff analysis,Quality Attributes Motivation Software architecture has become an emerging and promising field of study for software engineering practitioners and researchers because a good architecture design has always been a major factor in determining the