1. Amazon ec2. http://aws.amazon.com/ec2/.
2. Amazon elastic mapreduce. http://aws.amazon.com/elasticmapreduce/.
3. Apache hadoop. http://hadoop.apache.org.
4. The apache mahout project. http://mahout.apache.org/.
5. Microsoft dryad project. http://research.microsoft.com/en-us/projects/dryad/.