AI-native Chromium browser (from the makers of Arc) with AI chat built into every tab, not bolted on as a sidebar
Dia is listed under Browser Extensions & Copilots, in the AI Chat & Assistants category on Flocci AI Tools. AI-native Chromium browser (from the makers of Arc) with AI chat built into every tab, not bolted on as a sidebar. It is freemium — a usable free tier with paid plans above it, and it lives at diabrowser.com.
Dia is freemium: there is a free tier you can work in and paid plans above it. It is one of 426 freemium tools in the catalog, all labelled the same way so you are never surprised by a paywall.
Dia needs to be installed or self-hosted — it doesn't run in a browser tab. It is available on Mac. You can sign in with a Google account.
Dia does 3 things the catalog singles out: Ai-native chromium browser (from the makers of arc) with ai chat built into every tab, not bolted on as a sidebar; free for light ai use; a pro tier lifts the usage caps; now backed by atlassian after its 2026 acquisition of the browser company.
Firefox Smart Window is the closest free alternative: it sits in the same Browser Extensions & Copilots sub-category and is free. Gemini in Chrome, Opera Browser AI (Aria) and Page Assist also start free. The full list is on the alternatives page.
See the full list →