Download of Seisan 12.0.0 was on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. This PC program is compatible with Windows XP/XP Professional/Vista/7/8/10/11 environment, 32-bit version.
Seisan lies within Education Tools, more precisely Science Tools. We recommend checking the downloaded files with any free antivirus. The most frequent installer filenames for the software are: cmd.exe, se.exe and seisan.exe etc. This software is a product of University of Bergen. The following versions: 11.0, 10.3 and 10.2 are the most frequently downloaded ones by the program users.
From the developer:
The SEISAN seismic analysis system that helps you analyze earthquakes. With SEISAN it is possible using local and global earthquakes to enter phase readings manually or pick them with a cursor, locate events, edit events, determine spectral parameters, seismic moment, azimuth of arrival from 3-component stations and plot epicenters.
You may want to check out more software, such as SRIM, Equation Wizard or StatPlus, which might be similar to Seisan.