Apache ODE (in the Attic) (a project managed by the Apache Attic Committee)

Apache ODE (Orchestration Director Engine) executes business processes written following the WS-BPEL standard. It talks to web services, sending and receiving messages, handling data manipulation and error recovery as described by your process definition. It supports both long and short living process executions to orchestrate all the services that are part of your application.
WS-BPEL is an XML-based language defining several constructs to write business processes. It defines a set of basic control structures like conditions or loops as well as elements to invoke web services and receive messages from services. It relies on WSDL to express web services interfaces. Message structures can be manipulated, assigning parts or the whole of them to variables that can in turn be used to send other messages.

translate：
翻译：
ApacheODE（OrchestrationDirectorEngine）执行按照WS-BPEL标准编写的业务流程。它与web服务对话，发送和接收消息，处理数据操作和错误恢复，如流程定义所述。它支持长时间和短时间的流程执行，以协调作为应用程序一部分的所有服务。
WS-BPEL是一种基于XML的语言，它定义了几个用于编写业务流程的构造。它定义了一组基本的控制结构，如条件或循环，以及用于调用web服务和从服务接收消息的元素。它依赖WSDL来表示web服务接口。可以操纵消息结构，将部分或全部消息分配给变量，这些变量又可以用来发送其他消息。