What is "bigtop"

Bigtop may refer to:

• Circus
• Bigtop, a distributed operating system project from Microsoft Research

Bigtop is a Microsoft Research project which gives a framework to create a set of loosely coupled distributed system components. This will result in the creation of a Grid Operating system. Bigtop is not expected before the end of this decade. It is not clear whether Bigtop will be integrated into Windows or launched as a different operating system.