Toa (or Toa Origin – sometimes also Toa Mata), Turaga of Mata Nui, Matoran of Mata nui, Toa Nuva, Rahi, Bohrok, Bohrok Va, Bohrok-Kal, Rahkshi, Toa Metru, Toa Hordika, Visorak, Vahki, Dark Hunters, Turaga Dume, Two special Toa Editions, Piraka, Toa Mahri, Toa Phantoka, Toa Inika, Barraki and many many more ...
Bionicle.com: Mata Nui, Metru Nui, Voya Nui and further, Bionicle story.com and more
Chronicles: Tale of the Toa, Beware the Bohrok, Makuta's Revange, Tales of the Masks
Mask of Light
Adventures: Mystery of Metru Nui, Trial by fire, The darkness below, Legends of Metru Nui, Vojage of Fear, Maze of Shadows, Web of the Visorak, Challenge of the Hordika, Web of Shadows, Time Trap
Legends: Island of Doom, Dark Destiny, Power Play, Legacy of Evil, Inferno, City of the Lost, Prisoners of the Pit, Downfall, Shadows in the sky, Swamp of secrets, The final battle.
Other books: Official guide to Bionicle, Bionicle Rahi Beasts, City of Metru Nui, Bionicle World, Dark Hunters. Bionicle Encyclopedia, Bionicle Encyclopedia Second Edition
There are also a lot of comics, regular which followe the story and promotional ones. And now here's the Ignition series which follows 2006 and 2007 storyline.
Now also the Bionicle Graphic Novels began.
Mask of Light, Legends of Metru Nui, Web of shadows, Bionicle 4 announced for 2009
Lego Bionicle, Mata Nui Online Game, Mata Nui Online Game II, Bionicle Matoran Adventures, Bionicle: The game, Bionicle: Maze of shadows, Bionicle Heroes, most of them released for GB and GBA, PlayStation, PC, Xbox, GameCube, etc, excetp both games Mata Nui Online.