Through FCT|FCCN, b-on is associated with various national and international organizations. – Users of Ex-Libris Systems in Portugal –promotes the co-operation and sharing of information between users of the library management system ALEPH in Portugal and encourages its development as a response to the capabilities that have been created by new information technologies and to the new kinds of organization and operation of the library services.

COUNTER – Counting Online Usage of NeTworked Electronic Resources – is an organization that defines protocols and standards for the consistent and regulated measure of the use of electronic resources.

ICOLC – International Coalition of Library Consortia – is an international consortium of library consortia whose objective is to serve higher education institutions, providing their members with discussion and co-operation on matters of common interest.

SELL – Southern European Libraries Link – is an informal structure which represents the main Electronic Library Consortia of the countries of Southern Europe.

IGeLU – The International Group of Ex Libris Users – is an informal group of users belonging to libraries and other organizations that implement SFX and/or Metalib software products supplied by Ex-Libris. SMUG was formed in July 2002 and promotes the communication and co-operation between those implementing SFX and Metalib in order to increase their awareness about matters related to those two tools. It also provides a mechanism for representing the interests of the SFX and Metalib users as a whole with regard to the suppliers of software and content.

SCOAP3 – Sponsoring Consortium for Open Access Publishing in Particle Physics is a one-of-its-kind partnership of thousands of libraries, funding agencies and research centers in more than 40 countries. Working with leading publishers, SCOAP3 has converted key journals in the field of High-Energy Physics to Open Access at no cost for authors. SCOAP3 is centrally paying publishers for the costs involved in providing Open Access, publishers in turn reduce subscription fees to all their customers, who can contribute to SCOAP3. Each country participates in a way commensurate to its scientific output in this field. In addition, existing Open Access journals are also centrally supported, removing any existing financial barrier for authors.