Send us an email to contact@getstratosphere.org.
Use the mailing list to ask any question.
stratosphere-dev@googlegroups.com (https://groups.google.com/forum/#!forum/stratosphere-dev/subscribe)
Open an Issue on our GitHub page for bugs, documentation or website issues.
For project management issues, organizational questions, and university/corperate collaboration requests, please contact the speaker of the Stratosphere project, as found on our Legal page.