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Nabsun Review

Nabsun is an open-source browser that integrates an AI assistant for reading, clicking, and form filling, capable of operating with local models without internet connectivity.

shipped Sep 21, 2026chatbotfree
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Nabsun — product screenshot

Why it matters

1Nabsun is an open-source browser built on Chromium and Electron.
2It includes a built-in AI assistant that can read, click, and fill forms in open tabs.
3The browser supports running local AI models, enabling offline operation.
4Nabsun offers a free tier for all its functionalities.

About Nabsun

Business Model
Open Source
Funding
Bootstrapped
Platforms
Windows, macOS, Linux
Target Audience
Developers and users interested in a privacy-focused AI browsing experience
GitHubOpen Source

Specs

API Available

Yes, public API

overview

What is Nabsun?

Nabsun is an AI-powered browser tool that enables users to automate web interactions and integrate AI models directly into their browsing workflow. It functions as an open-source browser, built on Chromium and Electron, and incorporates an AI assistant designed to read, click, and fill forms within active tabs. A key feature is its ability to run on local models, which allows for operation without the need for internet connectivity, enhancing user privacy and performance. Nabsun also supports integration with other AI tools like Claude Code, Codex, and OpenAI, and provides user approval for AI actions by default.

features

Key Features of Nabsun

Nabsun provides a suite of features designed to enhance web browsing with AI capabilities, focusing on privacy and user control. Its architecture, based on Chromium and Electron, ensures compatibility and a familiar user experience while integrating advanced AI functionalities.

  • Open-source browser built on Chromium and Electron.
  • Built-in AI assistant capable of reading, clicking, and filling forms.
  • Supports running local AI models for offline operation and enhanced privacy.
  • Operates without requiring internet connectivity for core AI functions.
  • Integrates with external AI tools including Claude Code, Codex, and OpenAI.
  • Requires user approval for all AI-initiated actions by default.
  • Designed for privacy-focused AI browsing experiences.

use cases

Who Should Use Nabsun?

Nabsun is primarily targeted at developers and users who prioritize privacy and seek to integrate AI capabilities directly into their browsing environment. Its design supports various applications where automated web interaction and local AI processing are beneficial.

  • Developers and users interested in a privacy-focused AI browsing experience.
  • Individuals requiring automation for researching and extracting information from webpages.
  • Users needing to automate form filling and other web interactions.
  • Professionals looking to integrate various AI models into their browsing workflow.
  • Anyone seeking to run AI models locally for improved privacy and performance.

how to use

How to Use Nabsun

To begin using Nabsun, users can download and install the open-source browser on their preferred operating system. Once installed, the integrated AI assistant can be configured to perform tasks such as reading content, clicking elements, and filling forms within open tabs.

  • 1Download and install the Nabsun browser on Windows, macOS, or Linux.
  • 2Launch the Nabsun browser to access its interface.
  • 3Open desired web pages within Nabsun tabs.
  • 4Utilize the built-in AI assistant to interact with page content, forms, or links.
  • 5Approve AI actions as prompted to ensure user control.
  • 6Configure local AI models for offline functionality and privacy.

pricing

Nabsun Pricing & Plans

Nabsun operates on an open-source business model, making its core functionalities and browser available to all users without any cost. There are no tiered pricing plans or subscription fees associated with Nabsun.

  • Nabsun: Free (includes all features and functionalities)

Pros

  • +Open-source model provides transparency and community-driven development.
  • +Supports local AI model execution, enabling offline functionality.
  • +Enhances user privacy by processing data locally and never training on user data.
  • +Built-in AI assistant automates web interactions like reading, clicking, and form filling.
  • +Offers integration with various AI tools including Claude Code, Codex, and OpenAI.
  • +Completely free to use, with no hidden costs or subscription tiers.

Cons

  • Reliance on local models may require sufficient local computing resources.
  • As an open-source project, support may primarily be community-driven.
  • May require initial setup for integrating specific local AI models.

Similar Tools

Nabsun vs Competitors

Nabsun distinguishes itself in the AI browser market through its open-source nature and emphasis on local model execution. While other browsers may offer AI integrations, Nabsun's commitment to offline functionality and user data privacy sets it apart.

1

BrowserOS

Open-source Chromium fork with integrated AI agent, supports local LLMs (Ollama), and focuses on user-driven browsing with AI assistance.

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2

Page Assist

Open-source browser extension for local AI model integration, offering a sidebar UI to assist with web browsing tasks.

Visit
3

Sigma Browser

Browser with built-in local AI model support for private browsing, chat, and web automation, emphasizing privacy and open-source.

Visit
4

Browser Use

Open-source framework for building AI browser agents, supporting various LLMs (including local) for autonomous web interaction.

View on Stork

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