So far: Sia, Digibyte, Ethereum
I will checkout Byteball. Seems to be some good interest around that. IOTA seems neat too.
I agree that IOTA seems neat, but it honestly seems like a pipe dream. They expect to be a backbone to Internet of things, which would require a whole lot of industry connections. The main author, Sergei Popov, wrote an awesome paper, I give him that, but I would like to see actual traction, industry collaborations, test cases being implemented.
For the most part, when I look at a company to invest, ICO or IPO, I look at the background of the main guys, and what have they done in terms of pre-sales, connections and so forth, along with their technology, I look at the main developers and see if they have actually ever successfully launched a product before. Being smart, good developer doesn't mean they have what it takes to make a consumer focused application and bring it to market.
I would love to set up a website and actually look critically on the ICO's, but would like to find a group of peers to help the due diligence process. There are so many out there, that it should just be possible to find the true cherrys and pick them for investment targets. If anyone reading this asks the question: I don't think im an expert, but I have done development for 30 years, including cryptography, payment processing, banking infrastructure, consulting for venture capital companies and launched several companies that developed products. So I at least have some relevant experience.
As far goes generally about ICO's: the unregulated market is a two-edged sword. It make it easy for people/developers to raise money and its now the wild wild west. I'm a bit of libertarian with anarchistic tendencies; I don't like overbearing goverment regulation. But critical analysis of ICO's I do think is required to avoid people to fall into things that are not good investment targets or outright scams.