Here is a list of popular streaming services for documentary lovers:

Curiosity Stream

Curiosity Stream was launched in 2015 by the founder of the Discovery Channel, John S. Hendricks. The streaming service has thousands of documentaries on history, science, technology, nature, etc (all for just $20/year). Users can easily watch Curiosity Stream on any device - TVs, tablets, and phones.

DOX Channel

DOX Channel is one of the best places to watch high-quality documentaries from some of the most renowned filmmakers around the world.

You can subscribe for $2.99 and get unlimited access to the entire library of DOX films and docuseries.

HBO

Not only is HBO a fantastic place to watch blockbuster movies and addictive series, the network also has a long history of streaming incredible documentaries. HBO offers content for every taste. The documentaries cover everything from politics to entertainment and sports. On top of that, the network also produces a lot of original content ('Welcome to Chechnya', 'Being Serena', 'Leaving Neverland', 'Robin Williams: Come Inside My Mind'). So, become a subscriber, grab your popcorn, and watch the latest documentaries on HBO.

Hulu

Hulu is my final suggestion on this list for watching documentaries. The streaming service is home to an amazing selection of movies, especially docs.

There are a ton of great documentaries on Hulu right now ('I am Greta', 'Minding the Gap', 'Jane', 'Apollo 11', 'Grizzly Man', 'March of the Penguins', and many more), you can watch with plans starting at $5.99/month.

There are more video streaming providers than ever (such as Disney+, Amazon Prime, Hulu, YouTube TV, and many more). However, Netflix is still the leader in the market, with more than 180 million subscribers worldwide.