Who should use Claude Sidebar?

Claude Sidebar is a consumer product built for firefox users who use Claude for web-based assistance.

Does Claude Sidebar have a free plan?

Yes — Claude Sidebar is free to use.

What platforms does Claude Sidebar run on?

Claude Sidebar runs on the web, embeddable surfaces, macOS, Windows, and Linux.

Is Claude Sidebar still active?

Unverified. Claude Sidebar has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.

What projects are similar to Claude Sidebar?

Similar projects tracked by PulseGate include Claude in Sidebar, Claude, and Claude Usage Indicator.

Who develops Claude Sidebar?

Claude Sidebar is developed by Romso.

How long has Claude Sidebar been around?

Claude Sidebar first shipped in 2026.

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Claude Sidebar

Name: Claude Sidebar
Author: Romso

mozilla.orgBrowser DevTools & extensions

Claude Sidebar is a Firefox browser extension that opens quick access to Claude in a sidebar. It is intended for users who want to use Claude while browsing without switching tabs.

FreeWebEmbeddablemacOSWindowsLinux

Visit mozilla.org

1alternative

6features

2026since

Overview

6 features

Claude Sidebar sits in PulseGate's Browser DevTools & extensions category. It focuses on opening and using Claude without leaving the current Firefox browsing session. It is built as a consumer product for firefox users who use Claude for web-based assistance. Claude Sidebar costs nothing to use. Claude Sidebar is available on the web, embeddable surfaces, macOS, Windows, and Linux.

Behind Claude Sidebar is Romso, and it first shipped in 2026. Key capabilities include sidebar access, claude integration, and quick access. The interface is available in 32 languages, including Czech, German, and Greek.

Summary written by a language model from the project’s public pages.

Sidebar access
Claude integration
Quick access
Firefox support
Site permissions
No data collection

Built with & integrations

AI providers

anthropic

Runs on

BrowserEmbeddablemacOSWindowsLinux

Trust & compliance

Verified signals

HTTPSPrivacy Policy Terms of ServiceFree tierMulti-languageStore-verified publisher

Legal

Indexing history

What PulseGate has recorded for this listing

Indexed9 Sept · 15:45 UTC
Claude Sidebar verified via Firefox Add-ons
Source: Firefox Add-ons · Open

Frequently asked questions about Claude Sidebar

What is Claude Sidebar?: Claude Sidebar focuses on opening and using Claude without leaving the current Firefox browsing session. It is catalogued under Browser DevTools & extensions on PulseGate.
Who should use Claude Sidebar?: Claude Sidebar is a consumer product built for firefox users who use Claude for web-based assistance.
Does Claude Sidebar have a free plan?: Yes — Claude Sidebar is free to use.
What platforms does Claude Sidebar run on?: Claude Sidebar runs on the web, embeddable surfaces, macOS, Windows, and Linux.
Is Claude Sidebar still active?: Unverified. Claude Sidebar has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.
What projects are similar to Claude Sidebar?: Similar projects tracked by PulseGate include Claude in Sidebar, Claude, and Claude Usage Indicator.Claude in Sidebar Claude Claude Usage Indicator
Who develops Claude Sidebar?: Claude Sidebar is developed by Romso.
How long has Claude Sidebar been around?: Claude Sidebar first shipped in 2026.

At a glance

Pricing: Free
Platforms: Web
First seen: 9 Sept 2026
Built for: Firefox users who use Claude for web-based assistance
Model: B2C
Solves: Opening and using Claude without leaving the current Firefox browsing session.

Registered as

Firefox Add-ons: claude-sidebar-extension

Developer

Romso

Index record

Indexed: 9 Sept 2026
Lifecycle: Alive
First seen: Sept 2026
Last seen: 9 Sept 2026

Identity audit (13)

Slug: claude-sidebar-mozilla-org
Lifecycle state recorded: 9 Sept 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 9 Sept 2026
Timeline basis: Indexed-at chronology (no inferred launch/funding milestones).
Name from: Derived from the project's own page and URL.
Category from: Assigned by a language model.
Summary from: Written by a language model from public pages.
Languages from: Detected by a language model, checked against the page's own declaration.
Last updated: 9 Sept 2026
Canonical URL: https://addons.mozilla.org/en-US/firefox/addon/claude-sidebar-extension

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