Since 1996, Apache has been the most popular HTTP server software in use with over 59% of all websites and 67% of the busiest websites. Apache is web server software notable for playing a key role in the initial growth of the world wide web. In 2009 it became the first web server software to surpass the 100 million web site milestone. Apache is developed and maintained by an open community of developers under the auspices of teh Apache Software Foundation.