OpenZeppelin is the industry standard for smart contract security. Founded in 2017, it provides open-source contract libraries, security audits, and the Defender monitoring platform, with $50M+ raised.
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MetaMask is the world's leading crypto wallet and Web3 gateway by ConsenSys, launched in 2016 with 30M+ MAU, supporting Ethereum and EVM-compatible chains.
Hardhat is the most popular smart contract development environment in the Ethereum ecosystem. Founded in 2019 by Patricio Palladino and Franco Zeoli in Buenos Aires, Argentina, and open-sourced under the Nomic Foundation.
Ethereum is the first general-purpose smart contract platform, launched in 2015 and founded by Vitalik Buterin, with ETH as its native cryptocurrency. After shifting to Proof-of-Stake in 2022, energy use fell 99.9% and its Layer 2 ecosystem powers Web3 and on-chain payments.
Founded in 2012 in San Francisco, Coinbase is a regulated crypto exchange listed on NASDAQ serving 100M+ users globally, offering Commerce crypto payments and Wallet self-custody services.
Gemini is a regulated cryptocurrency exchange founded by Cameron and Tyler Winklevoss in 2014, headquartered in New York, known for strict compliance and institutional-grade custody.
Blockchain.com is a crypto wallet and exchange platform founded in 2011 in London, UK, serving 40M+ verified users across 190+ countries. It offers wallet, exchange, explorer, and institutional services as a common entry point for crypto payments and asset management.
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