Who should use Note Sidebar?

Note Sidebar is a consumer product built for firefox users who need quick Markdown note-taking.

Does Note Sidebar have a free plan?

Yes — Note Sidebar is free to use.

What platforms does Note Sidebar run on?

Note Sidebar runs on the web and embeddable surfaces.

Is Note Sidebar still maintained?

Unverified. Note 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 Note Sidebar?

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

Who makes Note Sidebar?

Note Sidebar is developed by nagadev.

How long has Note Sidebar been around?

Note Sidebar first shipped in 2024.

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Note Sidebar

Name: Note Sidebar
Author: nagadev

mozilla.orgNote-taking apps

Note Sidebar is a Firefox extension that provides a sidebar-based Markdown editor for taking notes while browsing. It supports multiple notes, Markdown formatting, individual note import and export, and full backup and restore.

FreeWebEmbeddable

Visit mozilla.org

2alternatives

6features

2024since

Overview

6 features

Note Sidebar is a Note-taking apps project. It focuses on taking and organizing notes without leaving the current browser tab or window. Note Sidebar is a consumer product aimed at firefox users who need quick Markdown note-taking. Note Sidebar is free to use. It ships for the web and embeddable surfaces.

Behind Note Sidebar is nagadev, and it first shipped in 2024. Key capabilities include sidebar editor, multiple notes, and markdown formatting. 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 editor
Multiple notes
Markdown formatting
Note import
Note export
Backup and restore

Built with & integrations

Runs on

BrowserEmbeddable

Trust & compliance

Verified signals

HTTPSPrivacy Policy Terms of ServiceFree tierMulti-languageStore-verified publisher

Legal

Indexing history

What PulseGate has recorded for this listing

Indexed16 Sep · 20:07 UTC
Note Sidebar verified via Firefox Add-ons
Source: Firefox Add-ons · Open

Frequently asked questions about Note Sidebar

What is Note Sidebar?: Note Sidebar focuses on taking and organizing notes without leaving the current browser tab or window. It is catalogued under Note-taking apps on PulseGate.
Who should use Note Sidebar?: Note Sidebar is a consumer product built for firefox users who need quick Markdown note-taking.
Does Note Sidebar have a free plan?: Yes — Note Sidebar is free to use.
What platforms does Note Sidebar run on?: Note Sidebar runs on the web and embeddable surfaces.
Is Note Sidebar still maintained?: Unverified. Note 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 Note Sidebar?: Similar projects tracked by PulseGate include Sidebar Note, Notes on Sidebar, and Sidebar Sticky Note.Sidebar Note Notes on Sidebar Sidebar Sticky Note
Who makes Note Sidebar?: Note Sidebar is developed by nagadev.
How long has Note Sidebar been around?: Note Sidebar first shipped in 2024.

At a glance

Pricing: Free
Platforms: Web
Built for: Firefox users who need quick Markdown note-taking
Model: B2C
Solves: Taking and organizing notes without leaving the current browser tab or window.

Registered as

Firefox Add-ons: note-aside

Developer

nagadev

Index record

Indexed: 16 Sep 2026
Lifecycle: Alive
Last seen: 16 Sep 2026

Identity audit (13)

Slug: note-sidebar-mozilla-org
Lifecycle state recorded: 16 Sept 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 16 Sept 2026
Timeline basis: Indexed-at chronology. This listing's first-seen date was written by the catalog backfill, not observed here, so it is not treated as a sighting.
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: 16 Sept 2026
Canonical URL: https://addons.mozilla.org/en-US/firefox/addon/note-aside

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