One I recently invested in, Factom, looks very promising. They have some impressive backers, including a grant from the Bill & Melinda Gates Foundation.

I like the concepts behind Ardor, Golem, and Sia but it's questionable whether they will ever meet their goals. I also have some money invested in Antshares, because I think it will see some big growth over the next year. I haven't invested any money in OmiseGO but it will probably grow a lot. If the price drops again, I might buy in.