There isn't much online about the Gamate, of course, but these are some of the Gamate-related pages I've come across:

• Gamate @ portablegaming.de Page on a German handheld development wiki. With some pics, info, game list and the Gamate Autopsy.
• BIT Gamate spellen lijst Extensive game list with ID numbers and such. Dutch.
• Handhelds That Use Cartridges FAQ - contains a bit of Gamate info
• Gamate @ Press Start
• Gamate @ Museo 8 Bits (Spanish)
• Gamate @ Ultimate Console Database
• Hopeless Gameboy Rivals: Bit Corp Gamate
• Gamate @ Obsolete Tears (French)
• Gamate @ Wikipedia
• Gamate @ Video Game Gazette
• Juanknes's youtube videos - including some actual footage of Gamate games
• Gamate Photo Slideshow - exactly that
• Gamate, a French band who are otherwise unrelated
• and finally, the answer to the question on everyone's lips - where do baby gamates come from?
  (a google search for "gamate" is pretty much dominated by people who can't spell "gamete" after the first couple of pages. it's bloody annoying!)