InstEvaL (german only) was a free-to-use internet instrument designed for student-based course evaluations. Back in the days, it could be used for courses of different disciplines at any university in the German-speaking countries. The full version of the InstEvaL included 48 questions measuring, from a student point of view, 11 scales of the subjective quality of teaching and learning as well as side conditions of a course.
It was available at http://www.sowi.uni-mannheim.de/InstEvaL and later http://insteval.uni-mannheim.de/ but seems to be should down since 2018.