The browser compatibility tables in Google Doctype were generated by testing the following browsers:

• IE8: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.04506.648; .NET CLR 3.5.21022)
• IE7: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1)
• IE6: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)
• FF3: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.0.1) Gecko/2008070208 Firefox/3.0.1
• FF2: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.16) Gecko/20080702 Firefox/2.0.0.16
• Saf3: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US) AppleWebKit/525.19 (KHTML, like Gecko) Version/3.1.2 Safari/525.21
• Op9: Opera/9.60 (Windows NT 5.1; U; en) Presto/2.1.1
• Chrome: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US) AppleWebKit/525.19 (KHTML, like Gecko) Chrome/0.2.152.1 Safari/525.19

If a newer version of any of these browsers is publicly available, please leave a comment on this page.