GhostMiner: Data mining software, with algorithms such as SVM implemented. Overview of features, and screenshots.
Library for Support Vector Machines (LIBSVM): An integrated tool implementing support vector classification, regression, and distribution estimation. C++ and Java sources available. [Free]
MATLAB Support Vector Machine Toolbox: By Dr Gavin Cawley, School of Information Systems, University of East Anglia.
Sequential Minimal Optimization for SVM: Software and documentation.
SVM-Light: Support Vector Machine Software: Training software for large-scale SVMs. [Free for non-commercial use]
SvmFu: C++ software for classification.