GIRB
Girb is useless, dumb, and cute making Girb the perfect virtual pet.
Electric Love Potato (Two Point OH!)
Electric Love Potato (Two Point OH!) is the next generation potato desktop assistant.
Desktop Scientists
Like Bongo Cat but with great scientists! Have Einstein or Turing work while you type!
PETS
[RPG Maker MZ] Pets - Add Companions with Gift System, Happiness, and Leveling Up!
Kadajah's Familiar & Pet System for RPG Maker MZ
Pro MZ Familiar Engine: Allies orbit, hunt foes & scavenge for items in real-time.
nelecat1.0
little cat as a desktop pet that isn't in the way. first version.
PetApp3 Portable Edition
AI Virtual Pet Simulator