AniList is a website and API for keeping track of what anime you are watching and discovering new shows. It has a lots of features, such as tracking your anime list, adding new anime, marking as watched, recommending anime, browsing by genre and popularity, and more.

AniList also has a very active community who use the website and API to build tools and websites. Some popular tools built with AniList are:
- AniList.io: a website that lets you browse and search for anime, add new shows, and track what you're watching. It also has a calendar view of all the upcoming new anime releases.
- Anime Calendar: a website that shows you all the airing anime each day and what time they air. It also has a list of all the anime that have been released in the past.
- MyAnimeList.net Compare: a website that compares your MyAnimeList.net and AniList.io anime lists and shows you how many anime you have in common.

If you're a fan of anime, AniList is definitely a website and API you should check out.