Shockingly, there are no alternatives to Khatrimaza on AlternativeTo. The world would be a slightly better place if you would suggest some 
You might want to check out sites like 1337x and RARBG for movie downloads. They have a wide selection and are quite popular.
If you’re looking for streaming rather than downloads, consider sites like Popcornflix or Tubi. They offer a good range of movies for free.
Another option is YTS, which specializes in high-quality movie torrents. It’s user-friendly and has a great interface.
Thanks for the suggestions! I’ll check those out.
Don’t forget about Internet Archive! It’s a treasure trove of classic films and documentaries.
For Indian films specifically, you could look into sites like Filmywap or Movies4u.