The Ethereum & Bitcoin Crypto Transaction Notifier is a free Chrome extension designed to provide real-time alerts for transactions involving Ethereum (ETH) and Bitcoin (BTC) wallets. Users can monitor their wallet addresses without the need for logging in, ensuring a streamlined experience that prioritizes privacy and security. The setup process is straightforward: simply enter your wallet address and, for Ethereum, an Etherscan API key, then save your settings to start receiving notifications instantly.

Key features of this extension include instant browser notifications for new transactions, a privacy-first approach with no tracking or ads, and multi-language support. The application is lightweight and fast, consuming minimal system resources, making it ideal for both personal and business wallet management. It is open-source, allowing users to review the code for transparency. Overall, this tool simplifies cryptocurrency monitoring with efficiency and ease.