Monero is the only significant coin that can be mined with the CPU. The advantage of GPU is gone since they made the network update in November, last year. There is no ASIC on the network, so practically, anyone with a CPU can mine. Now, the 'not so good' part: the difficulty is quite high, so you shouldn't expect too much profit. I walked that way in the past and my conclusion is that it's much better to just buy the coins. I am following the Monero project for some time now and it is one of the most serious project in crypto space, in my opinion. Great devs team, great community, constant software updates and so on. Not to mention that is the only coin that is private by default.
