Rabby Wallet

Name: Rabby Wallet
Brand: Rabby Wallet

Open-source multi-chain crypto wallet with built-in transaction security simulation.

softwareCrypto Walletscrypto-walletdefimulti-chain

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Our Verdict

Best for

DeFi users who want built-in transaction simulation to catch malicious approvals before signing.

Skip if

You need a wallet with native non-EVM chain support like Solana or Bitcoin.

What is Rabby Wallet?

Rabby Wallet is an open-source browser extension and app wallet built for the Ethereum and EVM ecosystem, supporting more than 100 EVM-compatible networks including major L1s and L2s. It automatically detects which chain a connected dApp is using and switches networks without requiring manual configuration. Its standout feature is a pre-sign security engine that simulates each transaction before signing, showing estimated balance changes, contract approval risks, and a risk score for the interacting address. It also supports hardware wallets like Ledger and Trezor, and ships as a browser extension, desktop app, and native iOS/Android app.

SpecificationsAI-estimated

deploymentBrowser Extension

open source✅ Yes

api available❌ No

key integrationsLedger, Trezor, OneKey, Keystone

Key Features of Rabby Wallet

Supports over 100 EVM-compatible networks including Arbitrum, Optimism, Base, and BNB Chain.

Automatically detects and switches to the correct network based on the connected dApp.

Simulates every transaction before signing to preview balance changes and approval risks.

Assigns a risk score to contracts and addresses involved in a pending transaction.

Connects to hardware wallets including Ledger, Trezor, OneKey, and Keystone.

Includes a built-in swap feature that aggregates rates across multiple DEX aggregators.

Ships as a browser extension, desktop app, and native iOS/Android application.

Is fully open source under the MIT license with public GitHub repositories.

Use Cases for Rabby Wallet

Safer DeFi interactions

Users preview transaction simulations before approving DeFi contract interactions.

Multi-chain portfolio management

Users hold and transact across dozens of EVM chains from a single wallet.

Cold storage signing

Users connect Ledger or Trezor hardware wallets for secure key custody.

Cross-DEX swapping

Traders use the built-in swap to compare rates across multiple DEX aggregators.

Pros & Cons of Rabby Wallet

Pros

Transaction simulation genuinely helps catch malicious approvals before signing
Fully open source, allowing independent security review
Broad hardware wallet support for cold storage users
Available across browser, desktop, and mobile

Cons

Focused on EVM chains only, no native support for non-EVM ecosystems like Solana
Newer and less widely recognized than incumbent wallets, so fewer dApp integrations assume it by default
Advanced security features can be less intuitive for complete beginners

Frequently Asked Questions

Is Rabby Wallet free?

Yes, the wallet itself is free; users only pay standard network gas fees for transactions.

Is Rabby Wallet open source?

Yes, it is fully open source under the MIT license with code published on GitHub.

Does Rabby support hardware wallets?

Yes, it supports Ledger, Trezor, OneKey, and Keystone hardware wallets.

What chains does Rabby support?

It supports over 100 EVM-compatible chains including Ethereum, Arbitrum, Optimism, Base, and BNB Chain.

Pricing Overview

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Free

Detailed plans are not listed. Visit the official website for pricing information.

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