Fish Catcher is an open-source browser extension that checks websites, links, and QR codes for phishing and scam indicators. It runs locally and offline, explains warnings in plain language, and supports Chrome-based browsers and Firefox without requiring an account.
Fish Catcher sits in PulseGate's Browser DevTools & extensions category. It focuses on recognizing phishing and scam websites before entering sensitive information. Fish Catcher is an open-source project aimed at web users who want private phishing protection. The project is open source (MIT). It ships for the web and embeddable surfaces.
Fish Catcher first shipped in 2026. Development happens publicly on GitHub with 68 commits in the last 90 days. Among its 10 catalogued features are local detection, offline checks, and plain-language warnings.
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