Directories of companies (they are directories of companies, not industrial establishments, and not only concerning industrial activities, but they include any kind of activity).

• Directori d'empreses de Barcelona
  Managed by the Barcelona Town Hall.
  Some 49,000 companies of any kind, in Barcelona.

• Directori d'empreses de Catalunya
  Managed by the Chambers of Commerce, Industry and Navigation of Catalonia.
  Some 440,000 companies of any kind, in Catalonia.

• Directori d'empreses del Vallès
  Managed by the Multi-sector Business Confederation CECOT.
  Information concerning companies located in the Vallès.

• El corredor de empresas
  Managed by the Seric Company.
  Some 50,000 companies in Spain, of any kind.

• Páginas amarillas multimedia - Telefónica
  Managed by the Telefónica Company.

Other webs of interest

• Oficina de Gestió Empresarial (OGE)
  Single window of the Generalitat de Catalunya for the management of services concerning industrial establishments.

• Secretaria de Telecomunicacions i Societat de la Informació
  Secretariat in charge of defining a set of actions in order to allow the participation of Catalonia in the Society of Information.