VoteMatch Europe 2009 - we cooperated with it in preparation of the Opinion Calculator. The project has some 12 national partners, we are the one for the Czech Republic and Slovakia. Run by Federal Agency for Civic Education's (Bundeszentrale für politische Bildung/bpb), Network NECE - Networking European Citizenship Education, Institute for Political Participation (IPP0, EUdebate2009.eu (Cafebabel).
EU Profiler - similar to our Opinion Calculator. run by European University Institute, or EUI (Florence), Kieskompas BV (Amsterdam), NCCR Democracy/Politools network (Zurich)
VoteWatch.eu - collect the data on votes in EP. They do analyses of them similar to ours. Paid by Open Society Institute, Burson - Marsteller a ElectionMall.com.
Parliamentary Informatics on Wikipedia