OPENTIA is a group of companies specialized on interoperability and open souce. For the private market, OPENTIA provides integrated open source productivity solutions to medium big enterprises as ERP, ECM, CRM, e-commerce, B2B, CMS, etc. OPENTIA is currently OpenERP partner for Spain. In the public field, OPENTIA provides consultancy and has developed main interoperability frameworks based on open standards. Best example has been the Spanish Interoperability Framework (ENI). Additionally OPENTIA technical branch develops deeply technical projects based on open source and open hardware, including: on demand integrations, virtualization of servers, migrations to open source, web portals including contents and maintenance, document management, OS & net security, middleware, video vigilance, etc.