StatLib Index (Popularity: ): System for distributing statistical software, datasets, and information by electronic mail, FTP and WWW. GraphPad Software (Popularity: ): Combines basic statistics with nonlinear regression (curve fitting) and publication-quality graphics. MedCalc (Popularity: ): Program for biomedical research. Includes free trial. InfinityQS Quality Control Software and Hardware (Popularity: ): Integrated quality control software modules that fulfill quality control standards mandated by internal, customer, industry, government and international organizations. Civilized Software (Popularity: ): Makers of MLAB Mathematical and Statistical Modeling System for research, exploration, and scientific data analysis, including ODE models. NCSS (Popularity: ): Data analysis, statistical analysis, and statistical graphics analysis package. Discerning Systems Inc. (Popularity: ): Statistical software for ground-water and environmental detection, compliance, assessment and remediation monitoring. MultiSimplex (Popularity: ): Experimental design and multicriteria optimization software, based on fuzzy logic and the simplex method for sequential design of experiments. Windows-based, download trial version. StatSoft (Popularity: ): Developers of Statistica. TexaSoft (Popularity: ): WINKS statistics and data analysis software. aML Multilevel Multiprocess Modeling (Popularity: ): Statistical software for multilevel, multiprocess models. Developed by Lillard and Panis, marketed by EconWare. VSN International (Popularity: ): Statistics and data-analysis software and services, including GenStat, AS Reml.