The emergency of the so called new digital economy, with intense diffusion of the information and telecommunication technologies, has provoked a revolution in the business world through the last years, changing the companies' paths and strategies, despite the nature of its products, markets and processes. Thus, the organizational networks become an alternative way of organizing the production of goods and services and may be used by the companies to improve its competitive position. This article's objective is to show the concept of virtual enterprises as dynamic collaborative networks by presenting some cases in other countries, to study the collaborative networks behavior and to compare the experience of foreign virtual companies with some Brazilian ones.