Complex sentence: The Apache HTTP Server has been the most popular on the public Internet; in June 2013, Netcraft estimated that Apache served 54.2% of all active websites and 53.3% of the top servers across all domains.
Split into simpler sentences: The Apache HTTP Server has been the most popular on the public Internet. In June 2013, Netcraft estimated that Apache served 54.2% of all active websites and 53.3% of the top servers across all domains.