Awesome
CASCExplorer
You can download compiled binaries here.
Make sure to edit path to wow folder in config file before use.
Donate to support developer!
Build instructions
First grab the code using git:
git clone https://github.com/WoW-Tools/CASCExplorer.git
cd CASCExplorer
git submodule update --init --recursive
Use Visual Studio 2017 15.7.0 or higher to build it once you have all dependencies.