Now Web pages offer everything from bulletin boards to electronic commerce. Government sites provide bids, RFPs and procurement forecasts.
Many private sites feature notification services.
In the last few years, their numbers have grown exponentially. Furthermore, these systems, used mainly to advertise government procurement opportunities, have increased in sophistication. Tendering systems may be owned by specific jurisdictions, such as the state of Alaska. They also can be owned by associations. There are hundreds of these systems out there.