AniList - AniList is a tool to track and record your progression in anime and manga, featuring multiple...
Kitsu - Kitsu is the easiest way to track, share and discover new anime and manga.
AniDB - AniDB is a non-profit anime database providing you with all information regarding anime.
Baka-Updates Manga - Your Reviews, Series, Scanlator and Latest Manga Release Resource
MyAnimeList - Start cataloging anime you've watched or manga you've read.
Saiko+ - Saiko+ is a social community application that is designed for users that are looking for Anime, comics, and games.