The tracker URL: https://tntracker.org
Interface is in German but can be managed well with google translate to English or another language. The community is fairly active. Keeping good ratio is very easy due to great bonus system and lots of freeleech torrents. Most content is also German but you can find international releases as well. Generally TNtracker is a great variant for German people to find some popular content.
Categories of the tracker Tntracker.org:
Invites to TNtracker.org available for 40 $