ROM Gripper didn't just get pulled, it died altogether. I booted it but couldn't get it to connect properly, and the *oid emulators have removed the ROM Gripper button from the menu as well. There's still alternatives like DroidEmuROMGet, but I liked how simple ROM Gripper and ROM Gripper++ were.
I'm also kind of curious as to what kind of content policy psx4droid violated. Couldn't really have been illegal, the fact that it required you to find a bios separately indicates that there wasn't any Sony-copyrighted code in it, although I suppose if Sony decided to whine and threaten to start a shitstorm over it Google might not have had a huge choice in the matter.