Quora Question: What Are The Best Machine Learning As A Service Companies and Startups?

Google Prediction API [1] [2] is a Machine Learning API As A Service API.

WolframAlpha PRO [3] can be considered as a "Data Computation as a Service".

Have you tried them yet? 

Links

1. Google Prediction API - Developer's Guide
2. Google Prediction API
3. WolframAlpha Pro