If you are not familiar with wsadmin.sh (Linux) / wsadmin.bat (Windows), check out my article Getting Started with wsadmin.

Here is an example of how to list applications using wsadmin.

~]$ /opt/WebSphere/AppServer/profiles/your_profile/bin/wsadmin.sh -lang jython -c "print AdminApp.list()"
WASX7209I: Connected to process "dmgr" on node Node01 using SOAP connector;  The type of process is: DeploymentManager
myApp01
myApp02
myApp03