Wroc³aw University of Economics
Central Statistical Office of Poland
OECD
World Bank
Economagic
Human mortality database
US Census Bureau International Data Base
CIA Factbook
United Nations
OPEN OFFICE - free, open-source, cross-platform office package.
GRETL - free, open-source, cross-platform software package for econometric analysis.
R - free software environment for statistical computing and graphics.
OCTAVE - free high-level interpreted language for numerical computations and graphical data visualization (Matlab clone).
Ox Console - object-oriented matrix programming language with a comprehensive mathematical and statistical function library. Free for educational purposes.