Petals ESB is an Open Source Enterprise Service Bus hosted by OW2.
Based on the JBI standard, Petals leverages SOA principles to ease application integration and modularization in Information Systems. By exposing applications logic as services, application interactions can be mapped as message exchanges between service providers and consumers. Such exchanges are driven by service contracts, while low-coupling is ensured by the ESB itself. This allows to create new services by composing existing ones.
One of the key features of Petals ESB is its distributed aspect (VS. cluster approaches). Several Petals instances can virtually constitute a single ESB for very flexible architectures.
Petals ESB comes with JBI components, monitoring features, administration and development tools.