Microsoft Azure

http://azure.microsoft.com/en-us/services/machine-learning/

I have not tried this yet, but it looks interesting to me.  It provides cloud-based access to machine learning models using a web browser.

From the link above:

Azure Machine Learning offers a streamlined experience for all data scientist skill levels, from setting up with only a web browser, to using drag and drop gestures and simple data flow graphs to set up experiments. Machine Learning Studio features a library of time-saving sample experiments, R and Python packages and best-in-class algorithms from Microsoft businesses like Xbox and Bing. Azure ML also supports R and Python custom code, which can be dropped directly into your workspace. Experiments are easily shared, so others can pick up where you left off.