They raise no claim to completeness.

European EMN Websites

EMN Europe
EMN Ad-Hoc Queries
EMN Wikipedia

European Websites on Migration and Integration

European Commission - EU Immigration Portal
European Commission - Fight against Trafficking in Human Beings
European Website on Integration

EURES - The European Job Mobility Portal

Austrian ministries and authorities

BKA - Federal Chancellery
BKA - Federal Minister for Women and the Civil Service
BMASK - Federal Ministry of Labour, Social Affairs and Consumer Protection

BMEIA - Federal Ministry for European and International Affairs

BM.I - Ministry of Interior
Federal Ministry of Justice

European Institutions and Agencies

Committee of the Regions
Council of the European Union

Court of Justice of the European Union

EASO - European Asylum Support Office

EESC - European Economic and Social Committee

European Commission - DG Employment, Social Affairs and Inclusion
European Commission - DG EuropeAid Development and Cooperation
European Commission - DG Home Affairs
European Commission - Eurostat

European Parliament
FRA - European Union Agency for Fundamental Rights
FRONTEX - European Agency for the Management of Operational Cooperation at the External Borders of the Member States of the European Union

International Organisations and other institutions

ICMPD - International Centre for Migration Policy Development
International Organisation for Migration (IOM) Vienna

IOM Headquarter

OECD - Organization for Economic Development and Co-operation

OSCE - Organization for Security and Co-operation in Europe
UN - United Nations
UNDESA - United Nations Department of Economic and Social Affairs

UNODC - United Nations Office on Drugs and Crime
UNHCR - United Nations High Commissioner for Refugees - Austria
UNIDO - United Nations Industrial Development Organization

UNOV - United Nations Office at Vienna

Other useful links

Berufsanerkennung in Österreich (recognition of professional qualifications in Austria)
HELP - Official help service for foreign citizens – Living and Working in Austria
Staatssekretariat für Integration (State Secretariat for Integration)