GStat is the Grid Status monitoring tool which collects data from the Grid Information System (BDII) and does sanity checks. The primary goals of GStat2 is to verify site published information on BDII and to display information about Grid services, resource information and related metrics in various views, such as Geo view, LDAP browser, site view, VO view, Summary view etc. GStat2 is now one of the most popular operation tool in most Grid sites. GStat2 is the result of collaboration between Academia Sinica Grid Computing Centre (ASGC) and CERN.