I have a high performance Desktop computer with a powerful NVIDIA GPU available. I wonder if there is some software similar to NiceHash Miner which I can install in Linux to make some little cash while I'm working on the machine doing other things.
There are many blog posts, howtos, etc. available through Google which will tell you know to mine your favourite crypto currency using an NVIDIA GPU on Linux.
Please note that NiceHash is something similar but different. NiceHash is an online marketplace for hashing capacity. It is not a mining pool. NishHash is about renting out hashing capacity to people who think they know how to get back more rewards from using X amout of hash than they have to pay for it.
AFAIK NiceHash does not offer a Linux client. Did you try to run it in a VM or on Wine?
I know this thread is outdated, but in case anyone is still interested in this question, there are some that can be found here(Linux ones are at the bottom).
To sum it up for you, there are two GUI alternatives for Nicehash on Linux- Cudo Miner and MinerGate.