Plugin that checks what mods players use?

I’ve seen this on some servers where you do /mods (player) and it brings up a list of the players mods. Is this a public plugin or a custom one?

Thank you so much,

This is the only one I could find: Api 5: rodel77 / ModBanner

Hey MoseMister,

Thank you very much for taking the time to search for that, much appreciated. That looks perfect.

Thanks again,

borrowing a quote of @PieFlavor somewhere, the client can fake what mod it’s using.