Cvrpy is a project mainly written in Python, it's free.
Python library for looking up company infomation from cvr.dk.
Lookup company information from Danish companies based on their cvr number on www.cvr.dk.
Information is returned as a dictionary, keys are in Danish.
Requires BeautifulSoup (http://www.crummy.com/software/BeautifulSoup/) easy_install BeautifulSoup