Component based SOA - WSO2 Carbon

WSO2 Carbon is the new way of creating your SOA Middleware. It contains everything you want to build your Middleware. With WSO2 Carbon,

1 You can use minimal set of features you want.
2.Later you can easily extend the functionality with minimal effort.
3.You can add your own functionality
4. You can add other third party functionality

For more details see paul's this blog post.