I've been reading through this forums for the past few weeks and all I see is "this coin is dead" or "everything is a shit coin". Is there any alt coin with potential to invest in or is it only bitcoin? I don't mean like a few here and there, I mean over 100 coins.
There is no really an altcoin with a great potential, like Ethereum, at one time, everyone said that it would exceed the Bitcoin, but a lot of them have left it after price decrease.
But you can always look for new cryptocurrencies in which to invest.
I would focus on altcoins that actually offer something new technologically that makes sense (not just technology for technology's sake). Because of this I would suggest Gridcoin and its Proof of Research, rewarding scientific computing for BOINC (folding proteins, simulating the human brain....) in a decentralized way on top of Proof of Stake.