Please note some of these might not be maintained.
It's changed quite a bit since I last looked at it, as it is now written in python, and many of my previous issues with it have been fixed.
It actually uses the same sprite database that pokeget does, which is quite cool. However, it also requires the actual sprite files be on your machine, so it isn't very portable.
It suffers from blurry sprites at times due to using timg, which wasn't designed for pixel art.
Other than that, it's still extremely feature rich with animations and a lot of extremely cool stuff.
Krabby is also written in rust, but it isn't very fast and can't display multiple sprites at once. The slowness is because it uses a full JSON API to retrieve forms and pokemon data, while pokeget settles with simpler guesses and compromises. As a result, pokeget is much faster than Krabby by a factor of about ~5x on an M1 Macbook.
Although it has a random shiny option, which in my opinion is absolutely awesome.