Internet Policies and Protocols
Internet standards are set by a group known as the IETF - Internet Engineering Task Force. This body acts through various committees that are responsible for the manifold Internet-related services.
Their general direction is to develop protocols that allow implementation of Internet-based services. There are an increasing number of relatively specialized application-oriented protocols being developed.
One that looks pretty interesting is: Personal Data Interchange - vCard (Extended Bus. Crd. fmt), vCalendar (Scheduler protocol). It looks like many software vendors in the PIM area intend to adopt this protocol, which should allow data sharing between various scheduling applications.
This page includes HTML standards, style information, and various tools for manipulating it. It is rather arguable whether or not HTML is truly an SGML application; none of the major vendors of HTML browser products (Microsoft, Netscape) seem to actually know or care about SGML, or the relationship between SGML and HTML.
When you want to run pieces of Web-based Client/Server applications on the web client, you need somewhat special tools...
The Open Group has been responsible for the documentation of many standards that are in use. They sell documentation, presumably at some profit...
The task of the ISO 3166/MA is to maintain and update ISO 3166, the International Country Code Standard.