Kitsu is described as '(formerly Hummingbird) is a social network for Asian media fans. Kitsu provides users with tracking feature to show other users what shows and manga they’ve seen' and is a anime / manga tracking app in the social & communications category. There are more than 25 alternatives to Kitsu for a variety of platforms, including Online / Web-based, Android, iPhone, Android Tablet and iPad. The best alternative is Simkl, which is free. Other great apps like Kitsu are AniList, MyAnimeList, Anime-Planet and AniDB.
Simkl is a TV, anime, and movie tracker that keeps a history of all the shows and movies you watch in one, central location. It’s a mobile app, a website, Google Chrome extension to keep track of everything you watch and integrates with many TV apps.
AniList is a tool to track and record your progression in anime and manga, featuring multiple scoring types, list themes, a public API, and many community features such as live chat, following feeds, and forums.
Keep track of your completed anime and manga, browse the database to find new series, discuss on the forums or with friends. MyAnimeList is one of the most mature anime and manga trackers around, with a highly feature-rich experience.
Most users think MyAnimeList is a great alternative to Kitsu.
A modern tracker, that let's everyone track their manga, manhwa, manhua, etc collections in a single place. It supports dozens of sites, from official publishers to fan-made translation groups - there is no better place to keep up to date with latest chapter releases.