As a PS2Linux owner, I stopped caring when they released OtherOS instead of the support I was used to.

I just meant to list the legal possibilities, but as I said Sony is very schizophrenic in how it does it.

Doesn't it run on PSP/Sony Android Phones and PS3 though?

No, PlayStation Suite does not run on PSP or PS3. It runs on the PlayStation Vita and a very small subset of Android phones/tablets (not even 'All Sony Phones', unfortunately)