1. Monica AI
AI copilot for chat, translation and writing on any site.
Why it replaces Free Gemini AI Sidebar Assistant: Covers similar ground in the AI category: AI copilot for chat, translation and writing on any site.
Best Free Gemini AI Sidebar Assistant Alternatives in 2026
Free Gemini AI Sidebar Assistant 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 Free Gemini AI Sidebar Assistant
Free AI sidebar assistant floating on every webpage, ready to summarize, translate, search, write and answer when you ask.
Free
Full reviewComparison at a glance
| Extension | Rating | Users | Pricing | Best for |
|---|---|---|---|---|
| Free Gemini AI Sidebar Assistant (original) | — | — | Free | Free AI sidebar assistant floating on every webpage, ready to summarize, translate, search, write and answer when you ask. |
| 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. |
| 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. |
| ViiTor Translate - AI Translation & Real-Time Bilingual Subtitles & Free | — | — | Free | The ViiTor translation provides translation for live audio & video, realizing bilingual subtitle functions. |
| 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. |
| Manganum: Sidebar with Gmail and Google Calendar | — | — | Free | One-click access to your productivity tools, even Google Calendar and Gmail. |
| Sidebar: ChatGPT, Bookmarks, GPT-4o | Meomni | 4.9 | 50K+ | Free | Ultimate Sidebar ChatGPT Assistant, Bookmarks with AI, Calendar and Tasks |
| WPS PDF - Read, Edit, Fill, Convert, and AI Chat PDF with Ease | 4.5 | 6M+ | Free | Users who need a free all-in-one PDF editor, converter and signer in the browser. |
| AnyDoc Translator - Translate Web and PDF | — | — | Free | The ultimate AI translator for web, files, ebooks, academic papers, images, and text |
Free Gemini AI Sidebar Assistant alternatives in detail
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2. Merlin AI
One AI assistant for summarising, writing and answering on any page.
Why it replaces Free Gemini AI Sidebar Assistant: 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 Free Gemini AI Sidebar Assistant: 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. 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 Free Gemini AI Sidebar Assistant: 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.
5. 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 Free Gemini AI Sidebar Assistant: Covers similar ground in the AI category: The ViiTor translation provides translation for live audio & video, realizing bilingual subtitle functions.
6. 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 Free Gemini AI Sidebar Assistant: 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.
7. Manganum: Sidebar with Gmail and Google Calendar
One-click access to your productivity tools, even Google Calendar and Gmail.
Why it replaces Free Gemini AI Sidebar Assistant: Covers similar ground in the AI category: One-click access to your productivity tools, even Google Calendar and Gmail.
8. Sidebar: ChatGPT, Bookmarks, GPT-4o | Meomni
Ultimate Sidebar ChatGPT Assistant, Bookmarks with AI, Calendar and Tasks
Why it replaces Free Gemini AI Sidebar Assistant: Covers similar ground in the AI category: Ultimate Sidebar ChatGPT Assistant, Bookmarks with AI, Calendar and Tasks
9. WPS PDF - Read, Edit, Fill, Convert, and AI Chat PDF with Ease
Easy-to-use PDF tools to view, edit, convert, fill, e-sign PDF files, and more in your browser.
Why it replaces Free Gemini AI Sidebar Assistant: Another popular AI extension: Easy-to-use PDF tools to view, edit, convert, fill, e-sign PDF files, and more in your browser.
10. AnyDoc Translator - Translate Web and PDF
The ultimate AI translator for web, files, ebooks, academic papers, images, and text
Why it replaces Free Gemini AI Sidebar Assistant: Another popular AI extension: The ultimate AI translator for web, files, ebooks, academic papers, images, and text
Compare Free Gemini AI Sidebar Assistant 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 Free Gemini AI Sidebar Assistant?
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 Free Gemini AI Sidebar Assistant?
Yes — AI Sidebar with Deepseek, ChatGPT, Claude and more., Clearly Reader - Your AI Reading Assistant, ViiTor Translate - AI Translation & Real-Time Bilingual Subtitles & Free are free.