[http://www.realexpayments.com/ Realex Payments] is an Irish company that provides payment services. Denis Martinez and I wrote a payment module that is using this service. This payment module has been used on a live site for a month now and looks stable enough.
It's distributed under BSD License and the code is available on google code. http://code.google.com/p/satchmo-realex-payments/
I don't know if it makes sense to integrate it to the Satchmo core payment modules as Realex is not used world wide but I can write and submit a patch for the integration if you want me to.
Reported by andre.miras