French Data Network
French Data Network (FDN) is a French non-profit organisation (association loi 1901) whose goal is "the promotion, the use and the development of Internet and Usenet networks according to their ethics, especially favouring the research and educative non-profit uses." 
It actually provides the same services as an ISP, offering RTC (since 1992) and DSL (since 2005) access to its members. It is a founding member of Gitoyen, a non-profit tier 2 operator.
FDN has also been politically active, taking a strong position against the HADOPI law. During the internet blackout in some countries during the Arab spring, it proposed RTC services to anyone able to access international phone calls. It has a strong position against censorship and in favor of network neutrality.