Download demetra+ 1.032 from our website for free. The program is included in Development Tools. This free tool was originally produced by Eurostat.
From the developer:
Demetra is a family of modules on seasonal adjustment, which are based on the two leading algorithms in that domain(TRAMO&SEATS@ / X-12-ARIMA).
You may want to check out more software, such as ActWin Development, Pentaho Data Integration or PrintForm, which might be similar to demetra+.