I somehow feel that OP meant of having any practical way to compute a private key - and not to feed the semantic trolls 
So depends on how are you defining the brute-forcing itself.
I disagree.So depends on how are you defining the brute-forcing itself.
Is there a tool that is able to brute force the private key, given a full Bitcoin address? I know it's nearly impossible, but want to try just for fun.
The OP said "brute force"The OP said "I want to try it just for fun" meaning now, not in the future.
My post addresses the question posted by stating that since it will never be possible to even count from 1 to (about) 2256 by any physical means, let alone count and calculate Keypublic = Keypublic + G [and hash that result three times] it is obviously currently, and will always be, impossible to find a specific key pair by a brute force algorithm.