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Dev Browser
Dev Browser is a coding agent tool that controls Chrome with short JavaScript scripts and persistent browser tabs.
Dev Browser lets coding agents control Chrome using short JavaScript scripts and the Puppeteer Page API. The browser stays open between calls, allowing an agent to navigate, inspect, act, and verify results without starting over. Named tabs carry state across scripts, while accessibility trees provide compact snapshots with stable element references. Agents can launch an isolated Chrome profile or attach to an already open browser. It supports macOS and glibc Linux, and provides a CLI and MCP server tools.
Dev Browser at a glance
Key features
- Persistent pages with named tabs carrying state
- Compact accessibility tree snapshots
- Real Puppeteer Page API with agent helpers
- Launch isolated Chrome profiles or attach to existing browsers
- CLI interface for running scripts
- MCP server with devbrowserrun and other tools
- Idle browser cleanup with configurable durations
Use it for
- Controlling Chrome with short JavaScript scripts via coding agents
- Inspecting web pages and verifying results without restarting
- Connecting to an existing browser instance for agent tasks
Companions
Tools that articles about Dev Browser recommend using with it, each with its job.
- Playwright — Hand-coded automation for the fixed, high-volume parts.
- Ollama — Any OpenAI-compatible local model, at no cost per task.
- LangChain — Compose exactly the agent your use case needs from model, tools, prompt, and middleware.
- CrewAI — Gives CrewAI agents a real browser.
Alternatives to Dev Browser
- browser-control — Shell-native design with stable element refs and no LLM or framework requirement.
- Agent Chrome Relay — Runs in background tabs using real logins without stealing browser focus.
- BrowserOS — Runs entirely locally and lets AI agents use real user logins to complete tasks.
- Chrome DevTools MCP — Enables coding agents to interact directly with a real browser instance.
- Browser Use — Managed remote browsers built for protected sites at $0.02 an hour.
- Page Agent — Integrates directly into web pages without browser extensions or headless browsers.
- Agent Pets — Approve agent permission prompts and send replies directly from any browser tab
- Webwright — Enables code-based web automation with reusable and rerunnable scripts.
- UI Context for Agents — It writes element selectors and source files directly into your coding agent prompts.
- Steel — Run scalable cloud browser sessions with a simple developer API.
- jevgrep — Reduces coding agent costs by providing targeted, relevant repository context.
- Agent Archive — Hand off coding sessions between Claude Code, Codex, and Cursor across machines.
All Dev Browser alternatives