Perfect-Number is a project mainly written in JAVA and SCALA, it's free.
Simple Perfect number based on Sample from Programming Scala book using Scala Actor, Spring Integration, Kilim, Java Executors
The different tests can be executed using these ant commands: A simple Perfect Number implementation: ant test -Dtest=TestSimplePerfectUtil
A Java Executor based implementation: ant test -Dtest=TestThreadPoolPerfectUtil
An Kilim based implementation: ant test -Dtest=TestActorsPerfectUtil
A Spring Integration based implementation: ant test -Dtest=TestSIPerfectUtil
A Scala Actor based implementation: ant test -Dtest=TestPerfectUtilScala