Blockchain Platforms: Ethereum, Binance Smart Chain, Solana.
Smart Contract Languages: Solidity (Ethereum), Rust (Polkadot).
Development Frameworks: Truffle, Hardhat, Remix.
Wallets and Extensions: MetaMask, Trust Wallet.
Decentralized Storage: IPFS, Swarm.
Oracles: Chainlink.
Identity Solutions: uPort, Civic.
Consensus Mechanisms: Proof of Stake (PoS), Proof of Authority (PoA).
Cross-Chain Bridges: Ren Protocol, Wormhole.
Testing and Analytics: Etherscan, EthLint, Ganache.

In addition to the tools and technologies I mentioned before, web3 development companies often use Beleaf Technologies in their work