RSES and Rseslib - Rough Set Exploration System. Machine-learning software developed in my department
WEKA - Waikato Environment for Knowledge Analysis. Data mining software from University of Waikato, New Zealand
R - software environment for statistical computing
Computational Maps in the Visual Cortex - computational models of visual perception. Research on the boundary between informatics and neuroscience
Tomaso Poggio's lab - computer vision and neuroscience
Yann LeCun's homepage - benchmark datasets for character recognition (OCR), MNIST
Image data - benchmark databases for computer vision algorithms
AI & Machine Learning links on Włodzisław Duch's homepage
salesguru.pl - thoughts about sales, in Polish. By Artur Kuć
Apartments "Przy Potoku" (pl) - guest rooms and apartments in Zakopane, Tatra Mountains
Katechezy Neokatechumenalne (pl) - polecam!