"TheCounter.com" identifies sixteen versions of six browsers (Internet Explorer, Firefox, Safari, Opera, Netscape, and Konqueror). Other browsers are categorised as either ‘Netscape compatible’ (including Google Chrome, which may also be categorized as 'Safari' due to its 'Webkit' subtag) or ‘unknown’. Internet Explorer 8 is identified as Internet Explorer 7. Monthly data includes all hits from 2008-02-01 until the end of the month concerned. More than the exact browser type, this data identifies the underlying web rendering engine used by various browsers, and the table below aggregates them in the same column.