AppFuse - Providing integration and style to open source Java. 
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Developer notes on setting up your IDE to work with AppFuse are contained 
below. Instructions currently existing for Eclipse and IDEA. Netbeans is
on the roadmap; you're more than welcome to create them in the meantime.

To begin, download Maven 2.0.9, install it, and add $M2_HOME/bin to your $PATH.
Create a MAVEN_OPTS environment variable and set its value to:

-Xms512M -Xmx512M

All issues should be logged in JIRA at http://issues.appfuse.org.
Get your questions answered on the mailing list at http://appfuse.org/forums.

Eclipse 3.2+:
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From the command line, cd into the appfuse directory and run:

mvn eclipse:eclipse -DdownloadSources=true

Get a cup of coffee or soda (or even better, a beer!) while you wait for Maven 
to download all the dependencies.

Eclipse needs to know the path to the local maven repository. Therefore the 
classpath variable M2_REPO has to be set. Execute the following command:

mvn -Declipse.workspace=<path-to-eclipse-workspace> eclipse:add-maven-repo 

You can also define the M2_REPO classpath variable inside Eclipse. From the 
menu bar, select Window > Preferences. Select the Java > Build Path > Classpath 
Variables page. Add a new one with a name of M2_REPO and Path of to your local 
Maven repository (/Users/${username}/.m2/repository on OS X and 
C:\Documents and Settings\${username}\.m2\repository on Windows). 

To setup hierarchical projects in Eclipse 3.2+, perform the following steps:

1. Rename appfuse/data/.project file to something else. 
2. Go to File -> Import ->  General -> Existing Projects and browse to your 
   workspace and the appfuse/data root. Because there is no .project file, 
   Eclipse will show all the subprojects as being available.  Select them and 
   click ok.
3. Rename the appfuse/data/.project back and refresh your left pane in Eclipse.
4. Repeat these steps for the "web" directory.

IDEA 6.0+:
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From the command line, cd into the appfuse directory and type "mvn idea:idea". 
Get a cup of coffee or soda (or even better, a beer!) while you wait for Maven 
to download all the dependencies.

After opening your project in IDEA, you may need to modify your Project JDK.