What is Firefox Notes?

Firefox Notes focuses on taking and storing notes directly within the Firefox browser. It is catalogued under Browser DevTools & extensions on PulseGate.

Who should use Firefox Notes?

Firefox Notes is an open-source project built for firefox users who need a lightweight browser notepad.

What platforms does Firefox Notes run on?

Firefox Notes runs on the web, embeddable surfaces, macOS, Windows, and Linux.

Is Firefox Notes still maintained?

It is being sunset according to the latest indexed signals.

What are alternatives to Firefox Notes?

Similar projects tracked by PulseGate include Notes on Sidebar, Sidebar Note, and Timestamp Notes.

Who develops Firefox Notes?

Firefox Notes is developed by Mozilla, based in the United States.

When did Firefox Notes launch?

Firefox Notes first shipped in 2017.

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Firefox Notes

Name: Firefox Notes
Author: Mozilla

github.comInfrastructure🇺🇸

Firefox Notes was an open-source notepad extension for Firefox that let users create and store notes in the browser. The Mozilla project is deprecated and is no longer actively maintained.

Open SourceWebEmbeddablemacOSWindowsLinux

Visit github.com

Overview

4 features

Firefox Notes is a Browser DevTools & extensions project. It focuses on taking and storing notes directly within the Firefox browser. Firefox Notes is an open-source project aimed at firefox users who need a lightweight browser notepad. Firefox Notes is open source under the Open Source license. It ships for the web, embeddable surfaces, macOS, Windows, and Linux.

Mozilla builds and maintains Firefox Notes, and it first shipped in 2017. Key capabilities include note taking, browser sidebar, and local storage. It is being sunset.

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

Note taking
Browser sidebar
Local storage
Firefox integration

Built with & integrations

Runs on

BrowserEmbeddablemacOSWindowsLinux

Trust & compliance

License

Open Source

Verified signals

HTTPSOpen SourceFree tierStore-verified publisher

Indexing history

What PulseGate has recorded for this listing

Indexed8 Sept · 00:20 UTC
Notes by Firefox verified via Firefox Add-ons
Source: Firefox Add-ons · Open

Frequently asked questions about Firefox Notes

What is Firefox Notes?: Firefox Notes focuses on taking and storing notes directly within the Firefox browser. It is catalogued under Browser DevTools & extensions on PulseGate.
Who should use Firefox Notes?: Firefox Notes is an open-source project built for firefox users who need a lightweight browser notepad.
Does Firefox Notes have a free plan?: Yes — Firefox Notes is open source under the Open Source license and free to use.
What platforms does Firefox Notes run on?: Firefox Notes runs on the web, embeddable surfaces, macOS, Windows, and Linux.
Is Firefox Notes still maintained?: It is being sunset according to the latest indexed signals.
What are alternatives to Firefox Notes?: Similar projects tracked by PulseGate include Notes on Sidebar, Sidebar Note, and Timestamp Notes.Notes on Sidebar Sidebar Note Timestamp Notes
Who develops Firefox Notes?: Firefox Notes is developed by Mozilla, based in the United States.
When did Firefox Notes launch?: Firefox Notes first shipped in 2017.

At a glance

Pricing: Open Source
Platforms: Web
Languages: English
License: Open Source
First seen: 8 Sept 2026
Status: 🔴 Sunsetting
Built for: Firefox users who need a lightweight browser notepad
Model: Open source
Solves: Taking and storing notes directly within the Firefox browser.

Registered as

Firefox Add-ons: notes-by-firefox

Developer

🇺🇸Mozilla

Index record

Indexed: 8 Sept 2026
Lifecycle: Alive
First seen: Sept 2026
Last seen: 8 Sept 2026

Identity audit (13)

Slug: notes-by-firefox-github-com
Lifecycle last checked: 8 Sept 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 8 Sept 2026
Timeline basis: Indexed-at chronology (no inferred launch/funding milestones).
Name from: Written by a language model from the project's public pages.
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: 8 Sept 2026
Canonical URL: https://github.com/mozilla/notes

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