You forgot Cwcheat and PSPState, Categories isn't necessary since the PS3 can assign them, though the PSP method was prettier.
I think it'll be a long time before we see plugins on the PS3, mainly because all the dev's that could pull it off are anit-piracy to the max. For every Dark_Alex you have a Math. Once the challenge of opening the system for Linux is over, pirate programmers will take over since the honest devs arn't interested in furthering the systems pirate capabilities.
That is when you will start seeing things like plugins and NPDRM keys being released.
If you're wondering why the honest devs are not making plugins a priority, it's quite simple. A plugin would make finding keys trivial and lead to more rampant cheating and save scumming. For every up there is a down.
I for one look forward to plugins on the PS3. The Screen Shot one is great, though if I remember correctly it only worked in game. I haven't check on it since back then, does it do XMB screen shots yet?
I also wish someone would have made a SaveState for POPS. Some Playstation games are not portable friendly.
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