xpwd prints the working directory of the active window.
Note: this program is a fork of xcwd by Adrien Schildknecht adapted for my own needs.
The main goal is to launch applications directly into the same directory as the focused applications. This is especially useful to open a new terminal or a file explorer.
This program is basically a hack, but it works well with my setup and I hope it will work for you as well :)
Just edit xpwd.c and change process_blacklist and path_blacklist to adapt the blacklist filter to your needs.