Andreessen Horowitz (a16z) is a Silicon Valley venture capital firm with $100B+ under management; its a16z crypto arm backs and supports crypto and blockchain companies.

Aave is an open-source decentralized liquidity protocol that lets users supply and borrow digital assets and enables developers to integrate lending markets into applications.

Alchemy is a blockchain developer platform providing infrastructure and tools for building and scaling onchain applications.

Aleo Network Foundation supports Aleo, a privacy-focused programmable Layer 1 blockchain for applications with selective data disclosure.

Alliance is a crypto accelerator and founder community supporting early-stage teams building blockchain and Web3 companies.

Allium provides historical and real-time blockchain data across more than 150 chains for analytics, applications, accounting, and institutional reporting.

Anchorage Digital is a regulated crypto platform providing institutions with integrated financial services and infrastructure solutions, including the only federally chartered crypto bank in the US.

Aragon develops tools for onchain organizations to manage governance, allocate capital and coordinate ownership in the DAO ecosystem.

Arbitrum provides Ethereum scaling infrastructure and developer tooling for launching and operating applications and Layer 2 chains.