Bitcoin Forum

I have around 35 VPS that are completely idle for 16 hours a day. The other 8 hours they are at about 60% cpu usage. Is there any profitable ways to mine with CPU? Could anyone point me in the right direction?

Xci might be worth a look

Depends if this are your own or rented VPS. Either way you wont make any profit. If they are your own you have to pay for electicity and you will make a loss there. If they are rented, you probably wont be able to mine since most of providers ban mining. I know this is the case with Google, Microsoft and Amazon. Read your provider TOS to avoid getting your account banned

In case what eckmar said just above doesn't apply to you, you'll still have to be sure that a bigger bandwith consumption is free, or you'll end up happy... Finally, it depends what the VPS have as CPU, because except in some rare cases, you'll need very highend CPUs to make any profit.

XMR

CPU mining is a good way to monetize idle servers. You say they are free but that is vague.
If the're bought and paid for or you have a use-it-or-lose-it contract (including electricity) then
mining is a good solution.

Do some research about which algos are best for CPU mining with the type of CPUs you have.
Some specialized server CPUs and older CPUs may not have the full feature set (ie AES & AVX2) and some
algos perform much better with them. In addition to raw compute performance, cache size and memory
bandwidth also affect some algos.

If you're looking for mining software take a look at my sig.

And all these VPS will have "shared" CPU. Unless you mean a dedicated server of course. But price for dedicated will be ~$125/month for cheapest Xeon. Probably you can mine 17H/s with ZEC.

Just upload any XMR/ZEC CPU miner on you VPS and run it - you will be surprised