Vitalik Buterin

Rarimo is a new generation of social apps, where users stay private without losing historical actions, networks, and identities. Citizens used their mobile phones to locally store their passport data, permissionlessly self-issue their own identities, and anonymously generate ZKPs that proved their eligibility to vote. This level of total decentralization is unique to Rarimo’s core identity infrastructure: the ZK identity registry.

RISE Chain is an Ethereum Layer2 that developed and open-source pevm, a parallel EVM engine. RISE prioritizes Ethereum alignment and decentralization. With its optimized database and state access methods, RISE expects full node operation to run efficiently with 32 Gigabytes of RAM.

MegaETH is building ultra high-throughput & low-latency EVM-compatible L2s. Accelerating the scalability endgame of Ethereum.

Polymarket is a decentralized information markets platform that lets users trade on the world's most highly-debated topics (e.g. coronavirus, politics, current events, etc). On Polymarket, users can build a portfolio based on their forecasts and earn a return if they are correct. When users buy shares in a market, they are expressing their own knowledge, research, and view of the future. Market prices reflect what traders think are the odds of future events, turning trading activity into actionable insights to help people make better decisions. Thus, Polymarket is a leading source of unbiased and real-time data about future events.

Daimo is a stablecoin wallet with no seed phrases. Keys are generated in the phone's secure enclave and never leave. User can add multiple devices and create Passkey backups to secure the account. Under the hood, it's a ERC-4337 contract wallet.

Nocturne is a protocol enabling private, composable accounts on Ethereum. Nocturne allows users to deposit or receive assets from EOAs and contracts to private, stealth addresses. Then, in the future, a user can prove ownership of privately owned assets in zero knowledge for use in arbitrary transactions or confidential transfers.

Kakarot is a zkEVM written in Cairo. It aims to allow users to leverage the scaling benefits of validity rollups while maintaining compatibility with the Ethereum ecosystem. Therefore, Kakarot can be used to run Ethereum smart contracts on Starknet.

Aztec Network is the first private ZK-rollup on Ethereum, enabling decentralized applications to access privacy and scale. Its industry-standard PLONK proving mechanism is used by the leading zero-knowledge scaling projects, ensuring the security of its rollup.

StarkNet is a permissionless, decentralized Validity-Rollup (also known as a "ZK-Rollup"). It operates as an L2 network over Ethereum, enabling any dApp to achieve unlimited scalability for its computations without compromising Ethereum's composability and security. This is possible due to StarkNet's reliance on the safest and most scalable cryptographic proof system: STARK.