For what it's worth, the Mahout 'taste-web' module contains scripts that will build a ready-to-use web service around a Java-based Recommender, as a .war file that you can deploy on something like Tomcat, and then talk to via HTTP. That would be accessible from any platform that can make HTTP requests.
http://lucene.apache.org/mahout/taste.html#Standalone+server


You can get more information about Mahout at http:
You can get more information about Mahout at http://mahout.apache.org/
Pop in on the mailing list if you like, you will likely get a warm reception.