Google announced an experimental browser called Disco. The new browser uses Gemini 3 to build GenTabs that turn open tabs into small interactive tools and apps. Google calls the project an experiment that will redesign the way people browse and work on the web.

The idea is simple. Disco looks at open tabs and chat history. The browser then proposes a GenTab that helps complete a task, such as planning a trip or comparing products. Each GenTab acts like a compact app inside the browser. Google says every generative element links back to the original web sources.

What GenTabs Do

A GenTab can show a calendar, timelines, maps, and cards with quick tips. The tool will let users click links, open pages in background tabs, and update the GenTab view from those pages. The goal is to reduce the juggling of many open tabs while keeping the source material visible and traceable.

Google showed an example where a GenTab becomes a trip planner. The planner pulled crowd trends and gave booking options. The GenTab also presented steps the user could follow. Google said Disco will suggest helpful GenTabs based on what the user is doing online.

A key point is that Disco uses Gemini 3 at its core. Gemini 3 is the same family of models Google uses in other products. Google said the GenTabs feature is experimental. The company will test how well generated tools help people finish complex tasks.

How to Join

Google Labs opened a waitlist for Disco. The first release will come to macOS. People can join the waitlist to try the browser and give feedback. Google said that popular ideas from Disco may later appear in other Google products. Disco builds on Chromium. That means it will share core web compatibility with other browsers that use the same base. At the same time, Disco adds a side chat column and a vertical rail for prompts. These elements let users create and refine GenTabs with natural language.