NESSI (Networked European Software and Services Initiative)

NEXUS-mems (The largest MST-MEMS Association in Europe) 

SCUBE (The Software Services and Systems Network)

The Future Internet Initiative

EAI
EAI (European Alliance for Innovation) is a grassroots organisation initiated through cooperation between public, private and government organisations. EAI bridges the gaps between the market, research and regulation bringing together key players from every discipline within the ICT innovation cycle.
To join please click: http://www.eai.eu/member-application