That’s a coincidence! I don’t believe that’s actually Thunder since that looks to be a Windows app (although you can technically build Thunder on Windows so there’s a very slim chance)

was wondering where this is originally from?

Here’s a bit of backstory!

The Thunder logo was inspired from other thunderbolt vector images that I encountered online. All of the images I encountered felt very “sharp” so I simply tried to adjust the corners to be more round.

So while there isn’t technically a “source” of the logo (at least that I’m aware of), I wouldn’t be surprised if there’s already something very similar! 😅