1. Monica AI
AI copilot for chat, translation and writing on any site.
Why it replaces AI Assistant, Local & On-Device — NanoChat: Covers similar ground in the AI category: AI copilot for chat, translation and writing on any site.
Best AI Assistant, Local & On-Device — NanoChat Alternatives in 2026
AI Assistant, Local & On-Device — NanoChat is a strong option, but it is not the right fit for everyone. Below are 10 alternatives compared on rating, install base, pricing and the use case each one actually wins on.
About AI Assistant, Local & On-Device — NanoChat
Free local on-device AI assistant in your Chrome sidebar: chat with any page, summarize, rewrite, translate and automate tasks.
Free
Full reviewComparison at a glance
| Extension | Rating | Users | Pricing | Best for |
|---|---|---|---|---|
| AI Assistant, Local & On-Device — NanoChat (original) | — | — | Free | Free local on-device AI assistant in your Chrome sidebar: chat with any page, summarize, rewrite, translate and automate tasks. |
| Monica AI | 4.9 | 3M+ | Freemium | People who want templates and translation alongside a general AI chat panel. |
| Merlin AI | 4.8 | 900K+ | Freemium | Generalists who want a single AI sidebar instead of five separate AI extensions. |
| AI Sidebar with Deepseek, ChatGPT, Claude and more. | — | — | Free | Chat with Deepseek AI, ChatGPT, Claude, and more. Boost creativity and productivity using this powerful AI-powered browser tool. |
| Universal Ad Blocker | — | — | Free | Your Best Defense Against Ads and Trackers. |
| Clearly Reader - Your AI Reading Assistant | — | — | Free | A browser extension with reader mode for optimal experience. Features copy, translate, speech, and PDF and Markdown export. |
| Chat AI Ctrl+Enter Sender | — | — | Free | Use 'Ctrl+Enter' for sending messages in AI chat services like ChatGPT. Prevents accidental sends and allows line breaks with Enter. |
| ViiTor Translate - AI Translation & Real-Time Bilingual Subtitles & Free | — | — | Free | The ViiTor translation provides translation for live audio & video, realizing bilingual subtitle functions. |
| Passwordstate | — | — | Free | Passwordstate for Chrome is a form filler extension that obtains credentials from Passwordstate. |
| Dark Mode - Dark Theme for Chrome | — | — | Free | A classic dark theme for every website. Use dark mode for the night and daily browsing to care for your eyes. |
| Hero Ad Blocker | — | — | Free | Your protection against ads and malware. |
AI Assistant, Local & On-Device — NanoChat alternatives in detail
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2. Merlin AI
One AI assistant for summarising, writing and answering on any page.
Why it replaces AI Assistant, Local & On-Device — NanoChat: Covers similar ground in the AI category: One AI assistant for summarising, writing and answering on any page.
3. AI Sidebar with Deepseek, ChatGPT, Claude and more.
Chat with Deepseek AI, ChatGPT, Claude, and more. Boost creativity and productivity using this powerful AI-powered browser tool.
Why it replaces AI Assistant, Local & On-Device — NanoChat: Covers similar ground in the AI category: Chat with Deepseek AI, ChatGPT, Claude, and more. Boost creativity and productivity using this powerful AI-powered browser tool.
4. Universal Ad Blocker
Your Best Defense Against Ads and Trackers.
Why it replaces AI Assistant, Local & On-Device — NanoChat: Covers similar ground in the AI category: Your Best Defense Against Ads and Trackers.
5. Clearly Reader - Your AI Reading Assistant
A browser extension with reader mode for optimal experience. Features copy, translate, speech, and PDF and Markdown export.
Why it replaces AI Assistant, Local & On-Device — NanoChat: Covers similar ground in the AI category: A browser extension with reader mode for optimal experience. Features copy, translate, speech, and PDF and Markdown export.
6. Chat AI Ctrl+Enter Sender
Use 'Ctrl+Enter' for sending messages in AI chat services like ChatGPT. Prevents accidental sends and allows line breaks with Enter.
Why it replaces AI Assistant, Local & On-Device — NanoChat: Covers similar ground in the AI category: Use 'Ctrl+Enter' for sending messages in AI chat services like ChatGPT. Prevents accidental sends and allows line breaks with Enter.
7. ViiTor Translate - AI Translation & Real-Time Bilingual Subtitles & Free
The ViiTor translation provides translation for live audio & video, realizing bilingual subtitle functions.
Why it replaces AI Assistant, Local & On-Device — NanoChat: Covers similar ground in the AI category: The ViiTor translation provides translation for live audio & video, realizing bilingual subtitle functions.
8. Passwordstate
Passwordstate for Chrome is a form filler extension that obtains credentials from Passwordstate.
Why it replaces AI Assistant, Local & On-Device — NanoChat: Covers similar ground in the AI category: Passwordstate for Chrome is a form filler extension that obtains credentials from Passwordstate.
9. Dark Mode - Dark Theme for Chrome
A classic dark theme for every website. Use dark mode for the night and daily browsing to care for your eyes.
Why it replaces AI Assistant, Local & On-Device — NanoChat: Covers similar ground in the AI category: A classic dark theme for every website. Use dark mode for the night and daily browsing to care for your eyes.
10. Hero Ad Blocker
Your protection against ads and malware.
Why it replaces AI Assistant, Local & On-Device — NanoChat: Covers similar ground in the AI category: Your protection against ads and malware.
Compare AI Assistant, Local & On-Device — NanoChat head-to-head
Direct comparisons with the extensions people weigh against it.
Monica vs Merlin AITwo all-in-one AI sidebars compared on model access, free quota and page context.Monica vs PerplexityA general AI assistant against a cited, search-first answer engine.Merlin AI vs PerplexityBoth are ai extensions people shortlist together for ai — see how ratings, install base, pricing and day-to-day use differ.All comparisonsThe full compare hub, grouped by category.
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Frequently asked questions
What is the best alternative to AI Assistant, Local & On-Device — NanoChat?
Monica AI is the closest match. Covers similar ground in the AI category: AI copilot for chat, translation and writing on any site.
Is there a free alternative to AI Assistant, Local & On-Device — NanoChat?
Yes — AI Sidebar with Deepseek, ChatGPT, Claude and more., Universal Ad Blocker, Clearly Reader - Your AI Reading Assistant are free.