Hulu. These sites are great places if you search for a specific documentary film. Another way to watch is on documentary streaming sites. This is a great way for random browsing because they have already filtered documentaries and put them into categories.
We collect a list of 7 sites for watching documentaries online with good quality, large database of films and sites that are frequently updated. In this list we will not rank them because they are very equal, but you will get a list of sites that in combination offer more than 10 thousands documentary films online.