The Matic Network is a sidechain based scaling solution for public blockchains. Matic aims to allow developers to better scale their Ethereum DApps by using a version of Plasma, along with side chains that use a PoS consensus mechanism. Matic plans on supporting other blockchains as well in order to facilitate interoperability.

Mainframe is creating a blockchain development platform for decentralized applications. Their marketing materials place a strong emphasis on encryption, privacy, and interoperability. Onyx, a decentralized workplace messaging tool, is the first application to be built on the Mainframe network.
Mainframe is powered by the MFT token.

Celer Network is developing a layer-2 scaling platform that aims to enable fast and secure off-chain transactions and off-chain smart contracts. The Celer Network hopes to enable developers to create scalable DApps by increasing the off-chain functionalities of blockchains.