Viz Communications (Popularity: )
http://www.viz.com/ Publishes anime and manga in the USA. Titles include Ranma ½, Shonen Jump, Animerica Extra, Dragon Ball, and Pokémon.
U-M Clan (Popularity: )
http://www.umstyle.com/ Small-press manga publishing group from Finland. Includes list of products and ordering information.
Broccoli Books (Popularity: )
http://www.broccolibooks.com Publisher of the Di Gi Charat, Aquarian Age - Juvenile Orion, and Galaxy Angel. Includes message board, production blog, and ...