Platforms market sector consider blockchain-based distributed computing platforms. Thanks to this platforms can people create a tradable digital token that can be used as a currency, a representation of an asset, a virtual share, a proof of membership and much more.
The number one between platforms is at this time Ethereum which has shown this option. Developers can create own DApps without a need to create their own blockchain network.
For example, Ethereum, NEO, NEM are supporting smart contracts (Smart contracts allows creating DApps). The most popular platform for creating DApps is just Ethereum, where are actually thousands of DApps.