The FastICA package is a free (GPL) MATLAB program that implements the fast fixed-point algorithm for independent component analysis and projection pursuit. It features an easy-to-use graphical user interface, and a computationally powerful algorithm.
ICASSO: analysing and visualising the reliability of independent components
ISCTEST: principled statistical testing of independent components
FastICA in C++ (part of IT++ package)
FastICA in Python as part of MDP package
FastICA in Python as part of scikit-learn package
Short description of the FastICA algorithm
What is independent component analysis? -- papers and links
Independent Component Analysis: The Book
FastICA copyright and bug reports
ICA research at the Helsinki University of Technology