Frele University of Berlin:-
A top-ranking research university and the largest of four institutions in Berlin, it ranked 87th on the QS World University Rankings and is particularly strong in arts and humanities and social sciences. The university has branch offices in the United States, Belgium, Russia, China, Egypt, and India, allowing it to form strong partnerships with many universities and better serve students from those countries.
Technical University Munich:-
This is Germany's highest ranking university that comes in 53rd on the World University Rankings. It excels in the more technical disciplines, like engineering. The university hosts some 5,000 international students, making up about 16% of its student population. Because of the university's strength in research and engineering, it has partnerships with a number of prestigious universities, including U.S. schools such as MIT, Stanford, Cornell, and Georgia Tech. The university also has strong partnerships across Europe and Asia.
Ludwig Maximilian University of Munich:-
One of Germany's oldest universities, LMU ranks 60th in the QS World University Rankings. Almost 15% of its student population is international students. The university offers more than 100 areas of study, and an increasingly large number of its classes are offered in English to cater to international students, particularly in the fields of business, management, psychology, and physics.
Founded in 1386 and ranked 55th in the World University Rankings, Heidelberg University is one of the oldest and most prestigious universities in Western Europe. It performs best in the sciences. More than 20% of the student body consists of international students from around 130 countries. Also, more than one-third of its doctoral students are international students. One thing to note, though, is that many of the university's classes are in German, so make sure to pack that German-English Dictionary if you decide to study here.
University of Freiburg:-
With 16% of its student body coming from 120 nations besides Germany, University of Freiburg in Baden-Wurttemberg aims to please international students. The university also offers popular intensive German language courses at its Language Teaching Center, which draws students from more than 50 countries during semester breaks to learn German. The Global Studies Program, a distinguished international master's program in English, is also a big draw for international students.
NOTE: The above views/statistics are indicative. Opinions and experiences may vary from person-to-person.