Wikipedia is a free online encyclopedia that can be edited by anyone. It operates using wiki software, which allows users to freely edit and compose web page content through a web browser. Wikipedia is written collaboratively by volunteers worldwide and provides a quick understanding of various topics, though it should only be used as a starting point for research due to the lack of refereeing of articles. The goal of Wikipedia is to have 250,000 articles in every language spoken by at least 1 million people. It is funded through donations and operates on a non-profit basis.