Commercial Clustering Software

• BayesiaLab, includes Bayesian classification algorithms for data segmentation and uses Bayesian networks to automatically cluster the variables.
• ClustanGraphics3, hierarchical cluster analysis from the top, with powerful graphics
• CMSR Data Miner, built for business data with database focus, incorporating rule-engine, neural network, neural clustering (SOM), decision tree, hotspot drill-down, cross table deviation analysis, cross-sell analysis, visualization/charts, and more.
• CViz Cluster Visualization, for analyzing large high-dimensional datasets; provides full-motion cluster visualization.
• IBM SPSS Modeler, includes Kohonen, Two Step, K-Means clustering algorithms.
• NeuroXL Clusterizer, a fast, powerful and easy-to-use neural network software tool for cluster analysis in Microsoft Excel.
• Neusciences aXi.Kohonen, ActiveX Control for Kohonen Clustering, includes a Delphi interface.
• perSimplex, clustering software based on fuzzy logic. Download available.
• PolyAnalyst, offers clustering based on Localization of Anomalies (LA) algorithm.
• TeeChart, Clustering charting component library for Delphi and C++, VCL and Firemonkey frameworks.
• Treparel KMX Big Data Text Analytics & Visualization, an integrated clustering, classification and visualization solution for analyzing large text collections. Also for OEM.
• Viscovery explorative data mining modules, with visual cluster analysis, segmentation, and assignment of operational measures to defined segments.
• Visipoint, Self-Organizing Map clustering and visualization.

Free and Open-Source Clustering Software

• Autoclass C, an unsupervised Bayesian classification system from NASA, available for Unix and Windows
• CLUTO, provides a set of partitional clustering algorithms that treat the clustering problem as an optimization process.
• Databionic ESOM Tools, a suite of programs for clustering, visualization, and classification with Emergent Self-Organizing Maps (ESOM).
• David Dowe Mixture Modeling page for modeling statistical distribution by a mixture (or weighted sum) of other distributions.
• ELKI: Environment for Developing KDD-Applications Supported by Index-Structures.
• MCLUST/EMCLUST, model-based cluster and discriminant analysis, including hierarchical clustering. In Fortran with interface to S-PLUS.
• MDL Clustering is a collection of algorithms for unsupervised attribute ranking, discretization, and clustering built on the Weka Data Mining platform.
• PermutMatrix, graphical software for clustering and seriation analysis, with several types of hierarchical cluster analysis and several methods to find an optimal reorganization of rows and columns.
• Snob, MML (Minimum Message Length)-based program for clustering
• StarProbe, web-based multi-user server available for academic institutions.

Additional Clustering Software Sites

• Fionn Murtagh's Multivariate Data Analysis Software and Resources

Related

• Software Suites, which also support clustering