Website of the Council of Europe:

http://www.coe.int/t/dg4/portfolio/Default.asp?L=E&M=/main_pages/welcome.html

http://europass.cedefop.europa.eu/europass/home/vernav/Europasss+Documents/Europass+Language+Passport/navigate.action?locale_id=1

http://www.coe.int/t/dg4/linguistic/

Austria:

http://www.vhs.or.at/186/

Germany:

http://www.sprachenportfolio-deutschland.de/

http://web.fu-berlin.de/elc/portfolio/de/index.html

Spain:

http://www.oapee.es/iniciativas/portfolio/portfolio-esp.html;

http://www.oapee.es/iniciativas/portfolio/portfolios-validados-esp.html

Switzerland: 

United Kingdom:

http://www.cilt.org.uk/qualifications/elp/adultelp.htm 

Others:

Eaquals-Alte:  http://www.eelp.org/eportfolio/index.html  (electronic)

Milestone-project: http://www.eu-milestone.de/index.php?spage=subcat&sid=196&vsp=1 

Minerva-project: http://eelp.gap.it/ (electronic)