- Blockcypher: blockchains live data
- BscScan: BNB smart chain explorer
- CoinMarketCap: price-tracking for cryptoassets.
- Capture the Ether: The game of the Ethereum Smart Contract security
- Damn Vulnerable DeFi: The offensive security playground for the decentralized finances.
- Paradigm: Official repository for Paradigm CTF 2021
- Awesome web3: curated list of awesome Web3 resources, libraries, tools and more.
- BlockThreat: The latest in blockchain, DeFi and exchange threat intelligence.
- CryptoZombies: blockchains and DApps courses.
- Rekt: crypto finance news
- The Daily Gwei: Daily commentary on the Ethereum ecosystem.
- Week in Ethereum: weekly ethereum newsletter
- bitcoin.org: Bitcoin official website
- Documentation: Official documentation for developers
- GitHub: Bitcoin organization
- lightning: "layer 2" payment protocol originally layered on top of Bitcoin.
- mempool: Bitcoin blockchains exploration
- wiki: Bitcoin official wiki.
- cardano.org: Cardano official website
- Developer portal: official documentation for developer
- Documentation: official documentation
- GitHub: cardano organization
- ethereum.org: Ethereum official website
- Awesome: Awesome Ethereum Resources
- Consensys: smart contracts best practices.
- Documentation: developers official documentation
- GitHub: Ethereum organization
- Learning: official learning guides
- Mastering Ethereum: book for developers, offering a guide to the operation and use of the Ethereum.
- Secureum: Ethereum and Solidity quizzes and answers by @0xTaylor
- near.org: Official NEAR website
- Developers documentation: official documentation for developers
- GitHub: NEAR organization
- polkadot.network: Polkadot official website
- Documentation: official documentation
- GitHub: Parity Technologies organization
- polygon.technology: Polygon official website
- Documentation: official documentation
- GitHub: polygon organization
- solana.com: solana official website
- Documentation: official documentation
- GitHub: Solana organization
- awesome-blockchain-rust: libraries and packages about blockchain/cryptography in Rust.
- Foundry: portable and modular toolkit for Ethereum application development written in Rust.
- Immunefi: Web3 bug bounty platform
- Plutus: visa debit card