Free / Open-sourceA private, on-device AI assistant that runs local LLMs right inside your browser
Free / Open-sourceA private, on-device AI assistant that runs local LLMs right inside your browser

Chat with your local Ollama LLMs right from your browser sidebar

This is our editors' assessment out of 5, not an average of user ratings. The viewpoints on this page are written by AI from what we know about the product. They are not customer reviews.
According to OpenAITools.app telemetry verified on 2026-11-11, open-os LLM Browser Extension (chromewebstore.google.com) is an AI platform indexed under AI Browsers generating 0 monthly visits with a month-over-month traffic delta of +0 (0.0%). Its primary geographic market is Global (— traffic share), and it operates on a Free pricing model. Top competing alternatives by monthly volume include NativeMind (2.21K visits/mo), Sigma AI Browser (240.78K visits/mo), Open WebUI (804.53K visits/mo).
Runs local Ollama right in my sidebar without hitting any cloud servers.
Solid little extension, just wish it remembered my model toggle across tabs.
Clean UI
needs better error toasts
AI-synthesized perspectives grounded in live site inspection, pricing structure, and category benchmarks — presented as editorial viewpoints rather than individual customer testimonials.
Use Llama 3, Qwen, Gemma, Mistral, DeepSeek or any other model you have pulled locally, and switch between them without leaving the extension.
Point the extension at localhost or a remote Ollama server on your local network or anywhere you can reach it.
Open the assistant in the browser sidebar on supported browsers or as a full new tab, whichever fits your workflow.
Responses appear token by token and render full Markdown including code blocks, lists and tables.
Pick from six built-in themes and optionally inject rich AI personalities such as HAL 9000 or MU-TH-UR 6000 via the experimental Soul Identity Injection feature.
open-os LLM Browser Extension (originally listed as "open-os AI Browser Extension") is a free browser add-on for Chromium-based browsers such as Chrome, Brave and Edge. Rather than sending your prompts to a cloud vendor, it talks to an Ollama instance running on your own computer or local network, giving you an instant, private assistant that lives in your sidebar or a dedicated tab. It supports any model you have pulled with Ollama — Llama 3, Qwen, Gemma, Mistral, DeepSeek and others.
The extension is deliberately minimal: no accounts, no telemetry and no external servers are required. You configure the Ollama host (localhost or a remote machine on your LAN), switch between installed models on the fly, and watch responses stream in token by token. Conversations render full Markdown, so code blocks, lists and tables look correct.
Extras include configurable pre-prompts and scenarios that set the right context for a model, six built-in visual themes ranging from Light and Dark to a retro MS-DOS terminal and a NOSTROMO MU-TH-UR 6000 look, plus an experimental "Soul Identity Injection" feature powered by soul-protocol.com that lets you layer rich personas onto conversations. Font size, username, assistant name and header text are all customizable.
Ask a local DeepSeek or Qwen model to explain snippets, draft functions or debug errors without sending proprietary code off your machine.
Summarize articles, draft emails and answer questions using a self-hosted model so nothing is logged by a third-party cloud.
Switch between installed models in a few clicks to compare how different open-weight models respond to the same prompt.
Connect to an Ollama box on your home network and chat with it from any Chromium browser on the same network.
Side-by-side telemetry comparison of competing AI tools in the same primary category
| Rank | AI Tool | Monthly Visits | MoM Growth | Direct traffic share | Pricing | Head-to-Head |
|---|---|---|---|---|---|---|
| ● | open-os LLM Browser Extension | 0 | — | — | Free | Current |
| 1 | NativeMind | 2.21K | -54.1% | 39% direct | Free | vs NativeMind |
| 2 | Sigma AI Browser | 240.78K | -47.1% | 25% direct | Free | vs Sigma AI Browser |
| 3 | Open WebUI | 804.53K | -2.8% | 37% direct | Freemium | vs Open WebUI |
| 4 | Sider | 2.64M | -10.6% | 64% direct | Freemium | vs Sider |
| 5 | Mochii | 26.99K | -20% | 40% direct | Freemium | vs Mochii |
| 6 | Ollama | 9.42M | +4.3% | 43% direct | Free, Freemium, Paid | vs Ollama |
Free / Open-sourceA private, on-device AI assistant that runs local LLMs right inside your browser
Free / Open-sourceA private, on-device AI assistant that runs local LLMs right inside your browser

A private Chromium browser with a built-in AI agent and offline LLM
A private Chromium browser with a built-in AI agent and offline LLM

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Free / Open-sourceSelf-hosted AI workspace for local and cloud models

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Compare GPT, Claude, and Gemini answers side by side in one chat
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One app to chat with GPT, Claude, Gemini and hundreds of other AI models