Daljit Dhadwal

Demetra+ is a free program provided by Eurostat and the National Bank of Belgium. The software provides a full set of tools for testing whether seasonality exists and then adjusting for it using either the X-12-ARIMA or the TRAMO/SEATS methods.

Links:

Download JDEMETRA+ (the most up to date version of Demetra+. It is written in Java and will actually run off a USB drive as a portable application).

Download Demetra+ (the older version of the program)

Demetra+ User manual (PDF)

The Practical Guide to seasonal adjustment with Demetra+ (PDF) by the United Nations Economic Commission for Europe

An Analysis of German Industrial Production with Demetra+