OpenBrain icon

OpenBrain

by cw@nett-post.no · Tools
Manifest V3 Free
View in Chrome Web Store Data as of 20 Oct 2026

AI Assistant powered by OpenRouter

Users
39
−2 in 30 days
Rating
5.0 / 5
unchanged in 30 days
Ratings
1
0 in 30 days
Store rank
#119K
#100K among extensions
Version
1.0.0
updated 5 Apr 2025

Users

monthly, 2 years
02346Apr 2025Feb 2026Oct 2026
Latest, 20 Oct 2026: 39 usersMove the mouse over the chart for any month

Ratings count

monthly, 2 years
001Apr 2025Feb 2026Oct 2026
Latest, 20 Oct 2026: 1 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About OpenBrain

OpenBrain: AI Sidepanel for Chrome OpenBrain brings the power of multiple AI language models directly to your browser's side panel. Using OpenRouter as a gateway, you can access a variety of top AI models from different providers like OpenAI, Anthropic, Meta, Google, and more - all without leaving your current tab. Key Features: • Multiple AI Models: Choose from various AI language models including GPT-4o, Claude, Llama, Gemini, and more through OpenRouter integration • Seamless Side Panel Integration: Chat with AI while browsing without switching contexts or tabs • Custom Configuration: Configure your own preferred models and API settings • Conversation History: Review your chat history within the panel • Dark Mode Support: Toggle between light and dark themes for comfortable viewing • Markdown Support: View AI responses with proper formatting, code blocks, and more How to Get Started: 1. Create an OpenRouter account (openrouter.ai) 2. Obtain your API key 3. Create a simple config file as described in the extension 4. Start chatting with your chosen AI models OpenBrain is perfect for researchers, writers, developers, students, and anyone who wants AI assistance while browsing the web. Note: This extension requires an OpenRouter API key. All conversations remain private between you and your chosen AI service - no data is stored on our servers.

Growth

WindowUsersChangeRatingsRating
7 days+2+5.4%00.00
30 days−2−4.9%00.00
6 months−2−4.9%00.00
1 year0+0.0%00.00

Version history

1 versions recorded
1.0.05 Apr 2025

Details

Category
Tools
First seen
5 Apr 2025
Size
3.0 MB
Languages
en-US
Pricing
Free
Extension ID
hhmingjkecbkigbgipdnhhcobhjlaffc

Permissions and risk

Low riskimpact 1, likelihood 1
Permissions
sidePanelstorage
Site access
https://openrouter.ai/*

Alternatives to OpenBrain

Extensions that rank for the same store searches or share the Tools category, ordered by users