GIntegrator is a lightweight and simple enterprise application integration (EAI) software. With GIntegrator, users can build a SOA-based environment easily. GIntegrator runs atop a JVM and uses a very easy language to describe message routing rules. It leverages the principles of enterprise integration patterns (EIP).
Citrus is a test framework written in Java that enables automated integration testing of message-based enterprise SOA applications. The tool can easily simulate surrounding systems across various transports and protocols (e.g. JMS, SOAP WebServices, HTTP, TCP/IP, etc.) in order to perform end-to-end use case testing. Citrus provides strong validation mechanisms for XML message contents and allows you to build complex testing logic such as sending and receiving messages, database validation, automatic retries, variable definitions, dynamic message contents, error simulation, and many more.
PyMQI is a Python library for working with WebSphere MQ (formerly known as MQSeries) implementing MQI and PCF protocols. It allows one to connect to queues, put, browse, get messages, and to programmatically administer MQ objects. PyMQI has been used in production environments for several years and is known to work on Linux, Windows, Solaris, AIX, and HP-UX with queue managers running on Linux, Windows, Solarix, AIX, HP-UX, and z/OS mainframe.