how to install a torrent client on LibreELEC RPI2

Hi,
I've installed LibreELEC on raspberry pi2: how can I install on it a torrent client on it?
which is the better torrent client?

And if I would istall a retrogame like RetroPie on it without delete libreELEC, how can I install it? let me know, thanks a lot!

Grimson: thanks for your answer. I already searched, but I didn't found an answer. please give me the result of your search please, thanks

Quote from klisk

LibreELEC
weird because I find lots of answers. do you want transmission, deluge, rtorrent?

I don't know, which is better?