For classic black-and-white Bengali cinema, DD Bangla still holds the rights. They often stream Satyajit Ray and Ritwik Ghatak films legally for free via their app.
Which of these would you prefer?
9xmovies is a popular torrent and illegal streaming website that provides users with access to a wide variety of film content. While it covers Bollywood, Hollywood, and regional Indian cinema, it has built a significant following specifically among Bengali-speaking audiences for its extensive collection of (Kolkata-based) films. Features of the Bengali Collection 9xmovies Bengali Movies