Madagascar is also multi-platform :

http://www.ahay.org/wiki/Main_Page

https://en.wikipedia.org/wiki/Madagascar_(software)

Is used in may publications to create synthetic data sets for reproducibility. 

Thank you for the good idea on reproductivity. I will consider the possibility of using Madagascar.

Hello Valery,

I also got the following links on the subject matter. Do check whether they could be of help.

http://www.geongrid.org/index.php/projects/syntheticseismogram

https://earthquake.usgs.gov/research/software/

http://adsabs.harvard.edu/abs/2002AGUFM.S61B1125K

Dear Jumoke Soyemi, thank you for links. Interesting opportunity using state-of-the-art information technology from GEONGRID.