The DFG explicity supports strenghtening of gender equality measures in research

The DFG’s Research-Oriented Standards on Gender Equality (PDF) (German)
Merkblatt Gleichstellungsmaßnahmen in Sonderforschungsbereichen (PDF) (German)
DFG Toolbox Gender Equality in Research and Academia (German & English)

Women in Science / Astronomy
MINT network, University of Cologne (German & English)
Gender-RelatedSystematics in the NRAO and ALMA Proposal Review Processes
University of Venus (English)
Women in Research on Facebook (English)
ASS Committee on the Status of Women in Astronomy (CSWA) (English)
AstroFrauenNetzwerk (AFN) (English)
She is an astronomer (IAU) (English)
Center of Excellence - Women and Science (gesis) (German & English)
General matters
Office of the Equal Opportunities Officer, University of Cologne (German & English)
Office of the Equal Opportunities Officer, Bonn University
GenderKompetenzZentrum (German)
Gender | Queer e.v. (German)
Gender Studies in Köln - GeStiK (German)