Fetch.ai is an artificial intelligence and machine learning based blockchain platform that enables anyone to share or exchange data.

ZKFair is the first community ZK-L2 based on Polygon CDK and Celestia DA, powered by Lumoz, a ZK-RaaS provider.

Dymension's blockchain platform is a modular settlement layer which provides all the tools and infrastructure needed to easily launch enshrined rollups as part of the Cosmos eco-system. Opening a whole new dYmension of decentralized use cases. dYmension introduces a scaling paradigm shift, enabling a future where metaverse apps, games and other ultra-TPS services can reside on the blockchain by easily deploying dedicated rollups customized for their needs.

Axelar is a decentralized cross-chain communication network, aiming at leveling up interoperability in Web3 by connecting heterogeneous blockchains and enabling asset mobility and program composability in an optimized way for both builders and end-users.

Saga is a protocol for automatically provisioning application-specific blockchains in the multiverse.

StarkWare is a ethereum layer-2 scaling protocol and one of main zk-rollup solutions. Starkware builds StarkNet( a permissionless decentralized ZK-Rollup) and StarkEx(a standalone permissioned Validity-Rollup）, both layer-2 scaling solutions for Ethereum using zero-knowledge rollup technology.