Nima,
Check out "xotcl-soap". If you search for that or for "xosoap" on the forums, you'll find a decent bit to get you started. Also, here's an active thread where we're discussing installation and a bit of "which is the most suitable tool":
https://openacs.org/forums/message-view?message%5fid=1392533
Kind regards,
Justis
