St. Catherine’s has many links with local German and English speaking churches.
- When there is a fifth Sunday in the month we hold a bi-lingual ecumenical service with our host congregation the Old Catholics
- Clergy and members of the congregation are invited to the annual Pfingstmontag Tag der weltweiten Kirchen service at the Stiftskirche in Stuttgart
- Annual German-American Gospel concert with the International Church of the Nazarene
There are also occasional services listed below:
- Internationaler Abendgottesdienst – 21st July 2019 hosted by the Asylpfarramt der Evangelischen Landeskirche in Württemberg. More details 2019-07-21 Matthäus feiert- J.Schlecht-Flüchtlinge