The Gameshark name is owned by Mad Catz. Ever since they bought it, they shut down the website and haven't made any new products. Technically still alive as Mad Catz still exists and haven't announced formal retirement of it.
I think Action Replay took up the reigns over in the console world.
While its website can still be visited, according to its Wikipedia entry, Mad Catz filed for bankruptcy back in late March of this year. Link
When I read about this, my first thought was that it was an April Fools' joke...
Looking forward to the RC store! I like how the free t-shirt gave me 2 options - RC or the t-shirt.
Anymore, any games that I really want to work at or enjoy, I get them on PC, mainly because Cheat Happens is a simple way of hacking them for replay ability, definitely much easier than GameShark or Action Replay ever was. They were good in their time, but I can't see them ever coming back given the breadth of trainers that exist here for the PC platform, along with the support/updates given. Between PC and Xbox, I'll get a game on PC now. I don't even know at this point if Action Replay exists for the Xbox One (will have to look at that now that I saw this thread).
* Updated game trainers and cheats daily
* Get notified when new cheats are added
* Request which games get new trainers
* Priority support with any problem