Over the past years, an increasing number of initiatives was considered to address emerging global sustainability issues. Sustainability assessment tools were the most commonly applied methodologies towards measuring sustainability performance. There are a number of assessment tools and techniques for sustainable development. This article aims at identifying the various sustainability assessment tools at country level taking into consideration the integration of environmental, economic, and social dimensions. The target of this paper is to compare the various sustainability measurement techniques and their characteristics using evaluation criteria. The outcome of this analysis is used to direct and clarify researchers and practitioners on sustainability assessment at country level, more specifically in developing countries. The focus of the paper rests on the Brundtland Report definition of sustainable development. The work was carried out using a bibliometric analysis approach based on Web of Science platform from the period 2000 to 2020. There was tremendous works which were conducted on sustainability assessment during the last two decades. The comparative analyses show the research gap among the various tools with respect to the criteria they satisfied. The research discussion suggests that a sustainability assessment framework for Small Island Developing States (SIDS) is identified as a future research direction.

Abstract-Sustainability has become a fundamental element for most countries in this new era. Its concept is found to be very complex and difficult to measure. As it is essential to obtain relevant information to take long term management decision, sustainability should be measured urgently. The subject is treated using an appropriate technique namely the fuzzy approach. It further seems appropriate to deal with ambiguity and vague situations where mathematical formula is ineffective. The model describes how fuzzy logic can be applied in measuring development sustainability using indicators. The model intends to treat inputs from individual components (economic, environmental and social) and they are combined using fuzzy rule bases to provide an overall measure of sustainability. It may then be addressed to scientists and policy makers as they move towards a sustainable path in the near future.

No abstract