AlphaMoatによると、2026-09時点でChrome拡張機能Kortexのユーザー数は1,000(前月比 +0%)、評価は4.7(3件のレビュー)で、9,324件のAIブラウザ拡張機能中1,224位、汎用AIでは2,418件中282位です。
The only AI browser assistant you’ll actually use. Focus, simplified. KORTEX — YOUR BROWSER IS A MESS. FIX IT.
Let’s be honest. You’ve got 40+ tabs open, you’re only using three of them, and the rest are just eating your RAM and giving you anxiety.
Kortex is a clean, lightweight sidebar that helps you organize tab chaos without overthinking it.
WHAT IT ACTUALLY DOES
Group all those “research” tabs into a single workspace. Your tab bar clears instantly, but everything stays one click away when you need it again.
No accounts. No “Sign in with Google”. No trackers. Your data stays on your device — always.
Most tools charge monthly just to save links. Kortex is free to use. Save as much as you want without the attention tax.
See exactly how much memory your open tabs are consuming before you archive them.
THE FUN STUFF
We’re building AI agents to handle the boring work — summarizing saved tabs, organizing notes, and more. You can join the waitlist inside the app.
STOP HOARDING TABS. START ACTUALLY WORKING.
Install Kortex, clear your head, and get back to what matters.
ChatGPT, DeepSeek, Gemini, Claude, Grok all in one AI sidebar, for AI search, read, and write.
+ 比較Change default search engine to ChatGPT search.
+ 比較One stop AI Assistant with GPT, Claude, Gemini: Chat, Write, Translate, Search, Summarize, image generator, video generation
+ 比較Summarize YouTube videos, web articles, and PDFs to save time, powered by ChatGPT, Claude, Mistral AI, and Gemini.
+ 比較データ月:2026-09 · ユーザー数と評価はChromeウェブストアの公開データを月単位で集計したものです。詳しくはデータの方法論をご覧ください。