Voltaire is a modular and lightning-fast Python Bundler for Ethereum EIP-4337 Account Abstraction. It is designed to operate within the peer-to-peer mempool of user operations, facilitating the inclusion of transactions on-chain more quickly, at the frontier of efficiency. A good way to think about Voltaire is as software that delivers User Operations and cannot change them, similar to those expected of block-builders. It is incentivized to participate in the network through priority fees and MEV.

Voltaire presently has complete coverage of the compatibility test suites written by ERC-4337 team. These test suites ensure that different bundlers can communicate effectively and defend against DDoS attack vectors. While the specification is still under development, all upcoming updates will aim to sustain full compliance coverage.

Voltaire is open-source, meaning that anyone can launch Voltaire and capture User Operation profits. By participating in the network, the mempool becomes more robust when facing censorship attacks.

Candide Wallet is an open-source, secure, self-custodial Smart Wallet built on ERC-4337. It leverages account abstraction without compromising on decentralization and censorship resistance. In practical terms, this means a Smart Wallet that doesn't depend on a centralized relayer controlled by a single entity. A gateway to undeniable free access to Ethereum for anyone with a smartphone and internet access.

Securing private keys is a major challenge in making Ethereum wallets accessible to everyone. With the constant threat of phishing and targeted attacks, how do we make it easy to manage private keys, and prevent them from being lost and stolen? By abstracting away seed phrases and introducing an account recovery module, Ethereum wallets could reach the same level of security as a multisig wallet, making it easier for both Ethereum pros and the average joe to manage their account security. This model of security has been highlighted in Vitalik's blog post.