The Web3 development stack has finally settled in 2026. There is now a clear default answer for smart contracts, frontends, wallet connection, and infrastructure — which means less time choosing tools and more time building. Here is the stack professional teams actually use, and why.
The modern Web3 stack at a glance
- Smart contracts (EVM): Foundry, with Hardhat as the established alternative.
- Smart contracts (Solana): Anchor.
- Frontend: wagmi + viem.
- Wallet connection: WalletConnect (Reown).
- Contract components: OpenZeppelin Contracts.
- Infrastructure: Alchemy or thirdweb.
Smart contract development
For EVM/Solidity, Foundry is the current standard — fast, with built-in fuzzing, and preferred by most professional Solidity developers. Hardhat remains a strong, JavaScript-friendly alternative with a large plugin ecosystem, and many teams still use it happily. For Solana, Anchor is the dominant framework, abstracting Solana's low-level account model and catching common vulnerabilities that raw program development invites.
Frontend: wagmi + viem
The React frontend question is settled: wagmi (type-safe React hooks for wallet connection and contract interaction) built on viem (a modern, type-safe TypeScript interface for Ethereum) is the go-to combination. Together they have largely displaced the older Ethers.js and Web3.js for new projects, thanks to superior TypeScript inference and better architecture. If you are starting an EVM dApp frontend today, this is the default.
Build on audited components
The single most important security practice in smart contract development is not writing standard patterns from scratch. OpenZeppelin Contracts provides audited, battle-tested implementations of token standards, access control, and upgradeable proxies that thousands of projects and auditors have scrutinised. Reinventing these is exactly how subtle, catastrophic bugs get introduced. Inherit from OpenZeppelin and only write custom code where you genuinely must — then get that custom code audited.
Wallet connection: one standard
WalletConnect (Reown) is the near-universal standard for connecting wallets to dApps. Its AppKit gives you a drop-in, customisable connection UI supporting hundreds of wallets, plus email/social login and on-ramps. Rather than integrating each wallet individually, you integrate WalletConnect once and support them all — which is why nearly every dApp uses it.
Infrastructure: platform vs libraries
You can assemble a stack from individual open-source libraries, or use a full platform. Alchemy and thirdweb bundle RPC, enhanced APIs, SDKs, pre-built contracts, and infrastructure like account abstraction into one integrated toolkit — dramatically faster to ship, at the cost of some platform dependency. For rapid development or onboarding mainstream users with social login (thirdweb is especially strong here, with a Unity SDK for games), platforms win. For maximum control and no lock-in, individual libraries win.
Supporting tools worth knowing
- Debugging: Tenderly — an opcode-level transaction debugger and simulator that shows exactly why a transaction reverted.
- Security scanning: Slither — free static analysis, run continuously during development.
- Oracles and cross-chain: Chainlink — price feeds, verifiable randomness, automation, and cross-chain messaging.
- Pre-confirmation data: Blocknative — real-time mempool data and gas estimation.
Non-EVM ecosystems need different tools
The EVM stack does not transfer. Solana centres on Anchor and Rust; Move-based chains (Sui, Aptos) have their own toolchains. If you are building outside the EVM, use the ecosystem's native framework rather than forcing EVM tools — the account models, languages, and security pitfalls are genuinely different, and fighting that costs you more than learning the native stack.
A starter stack for a new EVM dApp
- Foundry for contracts, building on OpenZeppelin components.
- Slither running continuously; Tenderly for debugging.
- wagmi + viem for the frontend.
- WalletConnect/Reown AppKit for wallet connection.
- Alchemy (or thirdweb for faster shipping) for RPC and infrastructure.
- An audit before mainnet, and Chainlink for any external data.
Tools referenced in this article
- All Web3 developer tools — full category with 14 tools reviewed
- Foundry, Hardhat, Anchor, wagmi
- viem, OpenZeppelin Contracts, WalletConnect