Apache Excalibur hosts the Fortress Inversion of Control (IoC) container, the component library Cornerstone, and the Avalon container framework. Excalibur is the steward of much of the original Apache Avalon code. Excalibur code is used by many other software projects include Apache Cocoon, Apache James, and the Keel framework. The code is well tested and stable and the project is operating in maintenance mode.
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