Nanobrowser

Nanobrowser is an open-source Chrome extension for AI-powered web automation and multi-agent workflows.

Nanobrowser is an open-source AI web agent that operates directly inside your browser. It serves as an alternative to OpenAI Operator, providing flexible large language model options for web automation tasks. Users can run multi-agent workflows by supplying their own LLM API keys. The project is open source, allowing developers to contribute to its codebase. It is designed for users seeking browser-based automation powered by artificial intelligence.

Nanobrowser at a glance

Best for: Software engineer, Founder
Runs on: Chrome extension
Pricing: Free
Released: December 2024
Category: AI agent tool
Website: nanobrowser.ai

Key features

Open-source Chrome extension
AI-powered web automation
Multi-agent workflow execution
Custom LLM API key support
Flexible model options

Use it for

Automating web tasks in the browser
Running multi-agent workflows
Executing web automation with custom LLM keys

Alternatives to Nanobrowser

WebBrain — Runs locally or in the cloud with your choice of LLM and zero telemetry.
nanobot — Provides a compact, self-hosted agent runtime with long-horizon execution.
BrowserOS — Runs entirely locally and lets AI agents use real user logins to complete tasks.
Lightpanda — Lower memory footprint and faster execution than Chrome for automated workflows.
Page Agent — Integrates directly into web pages without browser extensions or headless browsers.
Webwright — Enables code-based web automation with reusable and rerunnable scripts.
NanoClaw — Runs in isolated Docker containers with credential protection via OneCLI.
Browser Use — Managed remote browsers built for protected sites at $0.02 an hour.
nanoMuse — It runs across multiple devices with shared conversations and open-source code under GPL-3.0.
Dev Browser — Persistent browser tabs keep state across scripts so agents do not restart.
Firecrawl — Provides direct web data access for AI agents with open source flexibility.
n8n — Self-hostable automation with code allowed in any step

All Nanobrowser alternatives