Aorta is a load-balancing clustered P2P application. It executes Tasklets (which have the ability to split themselves into sub tasks that can be executed in pararell). A typical cluster contains of a LAN with 1-256 computers, each one running aorta. A Tasklet can be of any type ranging from encoding MP3s, Genomic DNA Alignment, or simply to rendering Web pages for high speed/heavily loaded Web sites. You can make functions calls to C/C++, applications like Matlab, etc.
Apache ActiveMQ is a popular and powerful message broker and enterprise integration patterns provider. Apache ActiveMQ is fast, supports many cross language clients and protocols, comes with easy-to-use enterprise integration patterns and many advanced features, while fully supporting JMS 1.1 and J2EE 1.4.
The Application Switch sits between applications and service providers, allowing a central location for configuration instead of requiring the user to configure each application separately. The switch also allows mutliple services to be combined and appear as a single service to applications.
Blackbird is the first enterprise service bus (ESB) for PHP developers. It provides a range of services, including managing configuration data, connections to message queues, databases, and other applications, and many more features. This makes it possible to very rapidly develop message-based applications and/or integration layers.
OAF is the Object Activation Framework for GNOME. It has a similar purpose to gnorba, the GNOME 1.x CORBA activation library, and will replace it for GNOME 2.0. It allows you to do much more powerful activation queries than gnorba. Each server is described by an XML file that defines its attributes. When querying or activating, one may specify complex requirements using the OAF query language.