Rundler

The eth-infinitism account-abstraction repository holds the reference ERC-4337 contracts, including SimpleAccount, plus a TypeScript SDK from the authors of the specification. Builders use it as the baseline implementation when creating ERC-4337 accounts.

Alchemy aa-sdk, shipped as Account Kit, is a full-stack smart wallet SDK with embedded wallets and a gas manager. Application builders use it to give users an account and sponsored transactions without a separate wallet app.

Coinbase Smart Wallet is a passkey-based smart account with the largest share of deployed wallets. Application builders integrate it so users sign with a passkey instead of managing a seed phrase.

Skandha 是 Etherspot 的 TypeScript ERC-4337 捆绑器，它通过可选的 MEV 保护和共享内存池兼容性来优化用户操作提交、Gas 记账和内存池路由，并且 Etherspot 在生产环境中运行该共享内存池堆栈。

Openfort is an embedded wallet SDK with authentication, ERC-4337 smart accounts, and self-hostable key management. Builders use it to give users a wallet inside the application without a separate wallet install.

Particle Network is a hosted wallet-abstraction stack that bundles a bundler, paymaster, and social login. Builders choose it when they want account creation, login, and transaction sponsorship from one service.