Hungary:

MTA Research Institute of Ethnic and National Minorities: http://www.mtaki.hu

MTA Research Institute for Linguistics: http://www.nytud.hu

Hungarian Academy of Sciences: http://www.mta.hu

Slovakia:

Gramma Language Office: http://www.gramma.sk

Ukraine:

Hodinka Antal Institute : http://www.kmf.uz.ua/egysegek/kutatomuhelyek/magyarsagkutato

Romania:

Szabó T. Attila Linguistic Institute: http://www.lett.ubbcluj.ro/~tjuhasz/sztanyi/

Serbia:

The Scientific Association for Hungarology Researches: http://www.mtt.org.yu/

Hungarian Language Corpus of Voivodina : http://www.korpusz.org.yu/