Installer
http://ntsecurity.nu/downloads/gplist.exe

Introduction
GPList lists information about the applied Group Policies.

Usage instructions
Download the file and run it from a Command Prompt.

Q&A
Q: When I double-click on the file a window comes up and disappears immediately. What's wrong?
A: You must run the file from a Command Prompt.
Q: How do I redirect or stop the output?
A: You can redirect the output to a file by appending for example "> file.txt" at the end of what you write at the Command Prompt. You can stop the output by appending "| more".
Q: In which order are the GPO's listed?
A: They are listed in the order they are applied. The one that is applied first comes first, and so on.
Q: I have a question that is not covered here. Where can I get help?
A: Send me your question. I can't promise that I will have time to answer, but I'll do my best.

source: http://ntsecurity.nu/toolbox/gplist

or you may just type in to cmd > gpresult -