Abstract: A fuzzy assessment system of Web resource quality is implemented. The system functions include Web sources investigation and comparison, criteria determination, Web sources evaluation, and sensitivity analysis of the criteria. Fuzzy logic and multi-attributes decision making (MADM) methods are integrated for tackling the incompleteness, imprecision, uncertainty, and subjectivity in the Web quality quantization and assessment. The sensitivity analysis and the quality ranking of Web sources are used by evaluators to better quantize Web source quality and to improve the fuzzy evaluation procedure for obtaining more precise results and for selecting more qualified Web sources.