BrowserOS vs MoltBrowser

BrowserOS is an open-source Chromium-based browser with AI agents for carrying out web tasks from natural-language directions. The agents can navigate, click, type, fill forms, extract data, and run workflows across multiple steps. Chat Mode answers questions about the page in view; visual Graph Mode for repeatable workflows is marked as coming soon. BrowserOS supports Gemini, Claude, OpenAI, and local models through Ollama or LM Studio. Its maker lists more than 40 MCP app integrations, including Gmail, Slack, Notion, and Calendar, as well as 53 built-in browser tools. An included MCP server connects with Claude Code, Gemini CLI, or Codex. As a Chromium fork, it supports Chrome extensions and import of Chrome bookmarks, passwords, and settings. Browsing data stays on-device unless cloud syncing is enabled; syncing is off by default, and synced activity is encrypted on BrowserOS servers. BrowserOS says it does not store or log AI prompts or responses, though providers may handle submitted data under their own policies. It is free and licensed under AGPL-3.0.

MoltBrowser is a free, open-source AI browser with an embedded on-device model and privacy features. Its page-aware AI can summarize articles, explain code, extract table data, and translate pages. It runs open models such as Llama, Mistral, Phi, and Qwen locally; the project also documents using personal keys with OpenAI, Anthropic, Gemini, and compatible endpoints. Its agent can click, scroll, navigate, and fill forms, and tasks can be scheduled to run automatically. Browsing memory and AI conversations are stored on the device; conversation history can be searched, exchanged as JSON, or wiped in one action. MoltNet routes traffic over Tor and allows exit-country selection, while MoltShield blocks ads and trackers, including YouTube ads, and dismisses cookie banners. The maker says the browser alters device fingerprint signals and masks the user's IP address. Builds are listed for Apple Silicon macOS, Windows 10/11 x64, and Linux x64. Chrome extension compatibility is advertised. iOS and Android are listed as in development, not as available builds.