Does anyone know which airlines used to fly from Tempelhof at all?

Most recently it was very limited. Brussels Airlines, Streling and one of the regional german carriers (can’t remember which, but they operated Metroliners to and from Templehof if I remmber rightly) were the last operators. Brussels Airlines still took advantage of being able to park undercover to allow their pax to disembark in the dry.

I’m in mixed minds about the closure, it is sad because of being such an historic place, and there is definately a role for some city airports. On the otherhand though, we all have to accept that aviation has to become more sustainable, and it’s environmental impacts must be measured against the benefits offered by services/facilities. In the case of Templehof, the local noise and air quality issues outweighed the benefits of retaining the facility.