Knockoff - Amazon Shopping Filter by Ordinary Systems

Amazon is flooded with trademark-squat "brands": random strings like SZHLUX, HORUSDY, and LATTOOK, registered at the USPTO purely to unlock Amazon Brand Registry. They sell commodity goods with no company, no warranty, and no reputation behind them.

Knockoff checks what you're actually buying, right in your search results: every listing's brand is appraised, and the junk is filtered out, so what's left is brands with a reputation to lose.

Featured in Fast Company, Gizmodo, 404 Media, PC Gamer, Yahoo, and Lifehacker.

WHAT IT DOES
• Every listing's brand is appraised right in your results, and the junk is hidden, dimmed, or labeled.
• Brands are checked against a curated register of thousands of established brands, refreshed daily. Unknown names are scored on the linguistic signature of pseudo-brands: all-caps squat-length strings, vanishing vowels, unpronounceable consonant runs.
• Three filter levels: Relaxed, Standard, Strict. Your allowlist and blocklist override everything.
• Trust or block any brand in one click, right from the results, with one-click misclassification reporting that improves the shared lists for everyone.
• Optionally hide Amazon's paid "Sponsored" listings too (off by default).
• Also optional: hide Amazon's Alexa promos, from the homepage banners and "just ask Alexa" prompts to the self-opening assistant sidebar. Products that work with Alexa are untouched, and a panel holding your cart is never hidden.
• See where each seller is based, and hide listings from countries you pick.

PRIVACY
Knockoff runs only on Amazon: its host permissions cover the 23 Amazon retail sites and nothing else, and it carries no code for anywhere else. The brand appraisal runs locally in your browser. No accounts, no profiles, nothing tied to you.

Two features send data. Both are on by default, and both can be switched off in settings: seller country sends seller IDs, so it can show where a seller is based; and Help pick US alternatives sends the product pages you open, so we know which products people want US alternatives for and can spot new junk brands on marketplaces the filter can't read yet. A stored row records that a product was viewed N times, never who viewed it. Never sent: your searches, your orders, or anything you type into a page. Reports stay opt-in and anonymous. Full detail: shop.knockoff.co/privacy

Free. Works on 23 Amazon marketplaces worldwide.