Clang - What tools can we build / already available using it?

Hi All,

I am a newbie and like CLANG very much. I created a sample tool for
self-purpose to print useful debugging information for a program. But
I understand that there is a lot more we can do with CLANG (though I
do not understand LLVM much)

Can anyone please list me that using CLANG what types of tools can be
used / developed? Is there any existing one that we can make use of?

Thanks in advance.