IOTA ($3,25) is one of the most important cryptocurrency, ranked 7 on Coinmarketcap. it's technology is way different than the bitcoin:
- It uses Tangle technology and not Blockchain technology
- It has no fees
- It works better when more people use the network
- It doesn't need high equipments to be verificated
The IOTA cryptocurrency was created for the IOT (internet of things) world and it's very interesting because it's more resistant at hack than the blockchain, even an Quantic attack.
I let you with a great video by Cryptonauts which explain all the system perfectly !