Hai, L. T.,Hai, P. H.,Thai, C. L.,Hugé, J.,Ahenkan, A.,Quynh, L. X.,Hens, L.2013-09-202017-10-162013-09-202017-10-162011Software for sustainability assessment: A case study in quang triprovince, vietnam. Environmental Modeling and Assessment, 16(6), 541-550.http://197.255.68.203/handle/123456789/4357Sustainable development is a widespread concept. Indicator selection and sustainability assessment are basic methods to analyse the sustainable development process. This study aims to develop a software application to select indicators and to allocate weightings to the indicators and the sub-indexes, so that they can be listed in a sustainability assessment. The Visual Basic software is used to develop a software package based on Delphi, analytic hierarchy, normalization and combination processes. Software for sustainability assessment was developed. Thirty-five indicators are selected as a first step of which eight health indicators and eight environmental ones and their sub-indexes are given weightings. The indicators are normalized. Sub-indexes are combined into a composite sustainable development index. The model is validated showing the ‘main features’ of the sustainability situation on health and environmental aspects in the Quang Tri province during the period 2000–2005. The results support the decision-making process of the competent authorities.enSustainable development. Delphi. Analytic hierarchy process. Normalization. Combination. Graphical user interfaceArticle