Stratosphere is a research project whose goal is to develop the next generation Big Data Analytics platform. The project includes universities from the area of Berlin, namely, TU Berlin, Humboldt University and the Hasso Plattner Institute.
A Big Data Analysis Platform (now called Apache Flink)
The Stratosphere project developed, and contributes to a platform that recently became an Apache Incubator project under the name Apache Flink and is undergoing the incubation process. You can visit the project's page at flink.incubator.apache.org.