BrowserOS

Overview

BrowserOS is an open-source Chromium browser that uses AI agents to carry out web tasks from natural-language instructions. It suits people who want browser automation and MCP integrations alongside familiar Chrome extensions; its main trade-off is that Agent Mode depends on cloud AI, since local models are not yet powerful enough for it.

Agents can click, type, navigate, fill forms, extract data and run multi-step workflows. Chat Mode answers questions about the current page, while visual Graph Mode for repeatable workflows is still coming soon. That makes BrowserOS more compelling for ad hoc browser tasks than for users seeking a finished visual workflow builder.

Key features

Agents, chat and integrations

BrowserOS supports Gemini, Claude and OpenAI, and offers more than 40 MCP app integrations, including Gmail, Slack, Notion and Calendar. Its product page also lists 53 built-in browser tools. Together, these features give automation-minded users ways to connect browser tasks with other apps; the practical cost can depend on which AI provider they use.

Developers can connect its MCP server to Claude Code, Gemini CLI or Codex. Chrome extension support, plus import for Chrome bookmarks, passwords and settings, lowers the friction of moving from Chrome without giving up its extension ecosystem.

Privacy and openness

BrowserOS says browsing data stays on the device unless users enable cloud syncing, which is off by default; synced activity is encrypted on its servers. It also says it does not store or log AI prompts or responses, though selected AI providers may handle submitted data under their own policies. The AGPL-3.0 license makes the browser open source, but provider data policies remain relevant when using cloud AI.

Pricing

BrowserOS is free and open source. Its Free plan costs nothing and includes built-in AI agents, with support for macOS, Windows and Linux. The product plan is also free, but free access does not mean unlimited cloud AI: the default model has limited daily usage, and other cloud providers charge according to API usage. Local models are free, but the documentation says they are not yet powerful enough for Agent Mode.

There is no paid BrowserOS tier described; the choice is between the default model's daily allowance, paying a cloud provider based on API use, or using local models for tasks they can handle.

Platforms

BrowserOS is a desktop Chromium fork for macOS, Windows and Linux, with Chrome Store extension support. It also supports importing Chrome bookmarks, passwords and settings. Its listed platforms include extension support, but it is not presented as a mobile browser.

Who it's for

BrowserOS is a strong fit for desktop users who want to automate browser actions, connect workflows to MCP-enabled apps or developer tools, and retain Chrome extensions. It is less suitable for anyone who needs Agent Mode to run on local models, a ready-to-use visual workflow builder, or predictable AI costs regardless of provider usage.

Pros and cons

• Pro: Free, open-source Chromium with Chrome extension support, which makes it a low-cost option for desktop users who want browser automation.
• Pro: Agents handle a broad range of actions, while more than 40 MCP integrations and a developer-facing MCP server reach beyond the browser.
• Pro: Cloud syncing is off by default, and BrowserOS says it does not log AI prompt or response content.
• Con: The default AI model has limited daily usage; other cloud providers charge by API usage, so heavy use may not be free.
• Con: Local models are not yet powerful enough for Agent Mode, limiting the appeal for users who want automation without cloud AI.
• Con: Visual Graph Mode is still coming soon, so users seeking repeatable workflows in that mode will need to wait.

Alternatives

For broader platform reach, Norton Neo is free and includes unlimited AI, with a VPN allowance of 5 GB per month or unlimited VPN when it is the default browser. Choose it if Android or iOS support matters more than BrowserOS's open-source Chromium and MCP setup.

Comet is downloadable for free on Android, iOS, macOS and Windows, but is not open source. It is an option for people who want a free browser across mobile and desktop without requiring an open-source product.

Arc Search is a free mobile browser for Android and iOS. Choose it if mobile browsing is the priority; premium and team features may be charged in the future, with no specifics announced.

Aside offers a free plan with 500 credits per month, up to three routines and bring-your-own-subscription terms, plus a Pro plan at $20 a month with three times Free usage. It may fit users who prefer defined routine and credit limits over BrowserOS's browser-integrated agents.

BrowserOS neo is another free, AGPL-3.0 open-source BrowserOS option for Linux, macOS and Windows; choose it if that alternative better fits your desktop setup.

Genspark AI Browser offers an On-Device Free AI plan with 169 open-weight models, no internet requirement, subscriptions or limits, alongside a Team plan at $30 a month. It suits readers prioritizing on-device AI and stated usage without limits.

MoltBrowser is a free-forever, fully open-source option for extension, Linux, macOS and Windows. It is worth considering if those terms and platform coverage are the main criteria.

Polar offers a free plan with 3,000 starting credits, 100 daily credits capped at 1,000, browser agent capabilities and advanced AI features; its Individual plan costs $20 a month. It may suit users who want a credit-based browser agent offering rather than BrowserOS's Chromium and MCP focus.

Browse more options in AI Browsers, AI Browser Agents or Web browsers.

Verdict

Choose BrowserOS if you want a free, open-source desktop Chromium browser that combines natural-language agents, Chrome extensions and useful MCP connections. Look elsewhere if local models are essential for Agent Mode, you need visual Graph Mode now, or you want cloud AI usage without provider-based costs and limits.