Myrmidon is one of the Ant 2 proposals currently in development. You can read more about the goals of Ant 2 here.

Myrmidon is a general-purpose task engine. It contains the basic building blocks for assembling any sort of task-based tool. Ant 2 is an example of such a tool, which could be assembled using the Myrmidon task engine, and a library of build related tasks.

Currently, Myrmidon is a prototype of what a task engine might look. It includes a small set of tasks and data types. We are currently porting many of the Ant 1.x tasks to the Myrmidon task engine.