This work tried to describe the schools and scientific bases of the Social Network, with their structures made under the invisible colleges and social capital; focusing also in the explanation of the techniques in creation of maps for relashion-ship through free softwares (Pajek, CiteSpace and TouchGraph). The practicum de-velopment has been based to turn the mentioned programs into application of cases, where each plataform has shown a different behavior, caused by the self characteris¬tics of each and every informatic resource.