Free Java IDE with the best Maven integration [closed]

What is free Java IDE with the best Maven (esp. Maven 3) integration?

Is Maven integrated in Eclipse?

Most Eclipse IDE downloads already include support for the Maven build system. To check, use Help About and check if you can see the Maven logo (with the M2E ) sign.

Which IDEs offer Maven add on support?

All three major Java IDE's (Eclipse, IntelliJ, Netbeans) support maven projects well.

I would suggest Netbeans as it uses maven as its build system. i.e. the tightest integration. However other IDEs such as IntelliJ and Eclipse also have excellent integration.

NetBeans and IntelliJ don't need a plugin for Maven support.

Eclipse or NetBeans provide a good support for maven. (Eclipse with plugin) I found that the support for maven is in NetBeans better as it is in Eclipse. In Eclipse you need the plugin m2eclipse.