There are many that you can buy right now.
1.Waltonchain
2. NEO
3. IOTA
4. OmiseGO
5. Request Network
these are some of my favorites in which I am invested. However, dont buy because you read about them .Do your own research.
I also invested in IOTA and NEO, I believe that this coin in the future will be in the top 10. Project developers work very well, really try and advertise a lot about these two coins.