Software

General-Purpose Data Mining

• WEKA (Source: Java)
• MLC++ (Source: C++)
• SIPINA
• List from KDNuggets (Various)
• List from Data Management Center (Various)

Classification

• C4.5 (Decision tree)
• OC1 (Oblique decision tree)
• Ripper (Rule-based)
• CBA (association-rule based)
• Bayes (Naive Bayes)
• Evidential distance-based (nearest-neighbor)
• PEBLS (nearest-neighbor)
• mlp (Neural Network)
• tiberius (Neural Network)
• SVM-light (Support Vector Machine: C/C++)
• LIBSVM (Support Vector Machine: C/C++)

Association Rule Mining

• FIMI Repository of Algorithms
• Apriori
• Eclat
• PAFI
• FP-growth
• ARTool
• ARMADA (Association rule mining in Matlab)

Clustering

• CLUTO
• Open Source Clustering Software
• Model-based Clustering
• Online software for Clustering

Outlier Detection

• ORCA (distance based)
• Columbus

Regression

• Regression routines

Optimization

• Convex Optimization: CVX (Matlab)
• Optimization Package: YALMIP (Matlab)
• MOSEK
• QP-SVM: OptML

Data Preprocessing

• Feature Selection
• Isomap (Dimensionality Reduction - in Matlab)

Datasets

• UCI Machine learning repository
• Data Sets for Data Mining
• Competition Data Set 
• IDS data sets
• Quest data repository
• KDNuggets