Crunchyroll

This website is mainly for anime streaming, great start, huh? And it also serves as a community for anime lovers where they can share their opinion and ratings about a certain series, movie or even characters. Detailed reviews of users regarding your favorite anime can be read as well. The website also offers forum and Discord chat.

This is one of the most well known and biggest anime database in the world wide web. It let's you create lists that you can personalize so you can keep track of the series that you are watching (like most of them do), at the same time, leave reviews about it on detail for other members to see. The website also has a traditional online forum and a Discord server with over 50.000 members.

Reddit's premier anime community.

Lists of your favorites, leave reviews and check your progress here and there, but, there is one feature of this website that you would completely like, for sure. This community also serves as sort of a social media platform for anime fans, yep! You can add friends and socialize with them, you can exchange opinions, you can also keep track of what they are currently watching and if they are done with it.

OneManga is a small community with some very dedicated members who talk about a wide range of series, mainly about Mangas and Anime.