ZuniChrome sidebar AI assistant that drafts emails and works across your open tabs.

4.5 (6)

Reviewed by Daniel Nikulshyn·Updated May 2026

Browser Extension Chrome Productivity Email Writing Assistant AI Assistant Summarization

Overview

Zuni is a browser-based AI assistant that lives in a Chrome sidebar, giving you instant access to AI help without leaving the page you're on. It can read the context of your current tab, making it useful for summarizing articles, answering questions about web content, and pulling key details from what's already on screen. The tool is especially focused on email productivity, helping users draft, reply to, and refine messages directly inside Gmail. Beyond email, Zuni can assist with writing, research, and quick tasks across most web apps, aiming to reduce the constant switching between tabs and AI chat windows.

Key features

Chrome sidebar interface
Tab-aware context understanding
Gmail email drafting and replies
Web page summarization
Cross-app writing assistance
Quick-access shortcuts

Pricing

Model: Freemium
Category: Productivity Agents
Rating: 4.5 / 5 (6)

Use cases

Draft Gmail replies in the sidebar

Compose and refine email responses directly inside Gmail using Zuni's sidebar, speeding up inbox management without switching to a separate AI chat tool.

Summarize articles and web pages

Pull key points from the page you're currently reading by letting Zuni use the active tab as context, helpful for research and news consumption.

Answer questions about on-screen content

Ask Zuni about anything visible in your current tab to clarify concepts, extract details, or get explanations without copying text elsewhere.

Cross-app writing assistance

Use Zuni to draft, edit, or rephrase text across most web apps, reducing the need to bounce between dedicated AI chat windows and your work.

Pros & Cons

Pros

Always accessible from the Chrome sidebar
Uses current tab content for relevant context
Strong Gmail integration for drafting replies
Works across many web apps, not just one
Reduces tab and window switching

Cons

Limited to Chrome users
Depends on extension permissions for web access
Less useful outside the browser
Quality varies by website structure

Reviews

4.5

Average from 6 ratings.

Devin Walker

Feb 6, 2026

Solid for our team

We rolled this out across the team last quarter and works across many web apps, not just one. Quick-access shortcuts fits neatly into how we already work, and cross-app writing assistance removed a step we used to do by hand. Limited to Chrome users, which is the main caveat, but it has held up under daily use.

Hannah Goldberg

Jan 20, 2026

Years in this space

I've evaluated a lot of these over the years. What stands out here is web page summarization — handled better than most — and strong Gmail integration for drafting replies. Worth the time if this is your use case.

Olga Ivanova

Jan 19, 2026

Skeptical, then convinced

I went in skeptical — most tools in this space overpromise. It actually delivers on cross-app writing assistance, and reduces tab and window switching caught me off guard. Less useful outside the browser is why this isn't a perfect score, still, I'd recommend giving it a real trial.

Priya Nair

Dec 27, 2025

Years in this space

I've evaluated a lot of these over the years. What stands out here is cross-app writing assistance — handled better than most — and works across many web apps, not just one. Less useful outside the browser is my one real gripe. Worth the time if this is your use case.

Camille Laurent

Dec 8, 2025

Years in this space

I've evaluated a lot of these over the years. What stands out here is chrome sidebar interface — handled better than most — and always accessible from the Chrome sidebar. Limited to Chrome users is my one real gripe. Worth the time if this is your use case.

Liam O’Connor

Oct 25, 2025

Solid for our team

We rolled this out across the team last quarter and uses current tab content for relevant context. Gmail email drafting and replies fits neatly into how we already work, and gmail email drafting and replies removed a step we used to do by hand. but it has held up under daily use.

Q&A

Which browsers and apps does Zuni support?

Zuni runs as a Chrome sidebar extension, so it's limited to the Chrome browser. Inside Chrome, it works across most web apps, with particularly strong integration in Gmail for drafting and replying to emails.

What can Zuni actually do with the page I'm viewing?

Zuni is tab-aware, meaning it can read the context of your current page to summarize articles, answer questions about the content, and pull key details. It also assists with writing and quick tasks across web apps without switching windows.

What are Zuni's main limitations?

Zuni only works in Chrome and isn't useful outside the browser, so desktop or mobile app workflows aren't covered. It also relies on extension permissions for web access, and output quality can vary depending on how a website is structured.