#Firefox

Revoke.cash is a wallet-hygiene and scam-protection stack: a web dashboard to inspect and revoke token approvals across 100+ networks, plus a browser extension (Revoke Sidekick) that warns before you sign. Started 2019. Core job is killing leftover ERC-20 / NFT / Permit2 allowances that let drainers pull funds without your seed. Extension now adds tx simulation, phishing/ad warnings, and address-poisoning flags (Fairside partnership). Free Lite tier; paid Standard / Premium / Ultimate for deeper coverage and auto-revoke. Preventative only. Cannot un-steal money already gone.

Pocket Universe is a browser extension that sits in front of your wallet and simulates Web3 transactions before you sign. Plain-English preview of what assets move, plus warnings on drainers, fake listings, honeypot NFTs, and sketchy approvals. Not a wallet. Never asks for your seed. Works with MetaMask and other browser wallets. Free to install. Monetized with ~0.8% fees on certain DEX/aggregator routes and optional Pro coverage (up to ~$30k per eligible loss, claim rules apply). Acquired by Kerberus in 2025. Desktop browsers only.