Who is Site timer for?

Site timer is a consumer product built for firefox users who want to manage website usage.

Does Site timer have a free plan?

Yes — Site timer is free to use.

What platforms does Site timer run on?

Site timer runs on the web, embeddable surfaces, macOS, Windows, and Linux.

Is Site timer still maintained?

Unverified. Site timer 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 Site timer?

Similar projects tracked by PulseGate include Site Timer Productivity Helper, Website Timer Blocker, and Site Limiter.

Who makes Site timer?

Site timer is developed by niklassalminen.

How long has Site timer been around?

Site timer first shipped in 2022.

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Site timer

Name: Site timer
Author: niklassalminen

mozilla.orgOther productivity

Site timer is a Firefox browser extension for setting time limits on selected websites. It tracks site usage and sends a notification and sound alert when a timer expires.

FreeWebEmbeddablemacOSWindowsLinux

Visit mozilla.org

2alternatives

7features

2022since

Overview

7 features

Site timer sits in PulseGate's Other productivity category. It focuses on limiting time spent on distracting websites through timers, notifications, and sound alerts. It is built as a consumer product for firefox users who want to manage website usage. Site timer costs nothing to use. It ships for the web, embeddable surfaces, macOS, Windows, and Linux.

It is developed by niklassalminen, and it first shipped in 2022. Among its 7 catalogued features are site timers, time limits, and usage tracking. The interface is available in 32 languages, including Czech, German, and Greek.

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

Site timers
Time limits
Usage tracking
Notifications
Sound alerts
Website selection
Browser tab access

Built with & integrations

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

Indexed18 Sep · 11:23 UTC
Site timer verified via Firefox Add-ons
Source: Firefox Add-ons · Open

Frequently asked questions about Site timer

What does Site timer do?: Site timer focuses on limiting time spent on distracting websites through timers, notifications, and sound alerts. It is catalogued under Other productivity on PulseGate.
Who is Site timer for?: Site timer is a consumer product built for firefox users who want to manage website usage.
Does Site timer have a free plan?: Yes — Site timer is free to use.
What platforms does Site timer run on?: Site timer runs on the web, embeddable surfaces, macOS, Windows, and Linux.
Is Site timer still maintained?: Unverified. Site timer 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 Site timer?: Similar projects tracked by PulseGate include Site Timer Productivity Helper, Website Timer Blocker, and Site Limiter.Site Timer Productivity Helper Website Timer Blocker Site Limiter
Who makes Site timer?: Site timer is developed by niklassalminen.
How long has Site timer been around?: Site timer first shipped in 2022.

At a glance

Pricing: Free
Platforms: Web
Built for: Firefox users who want to manage website usage
Model: B2C
Solves: Limiting time spent on distracting websites through timers, notifications, and sound alerts.

Registered as

Firefox Add-ons: site-timer

Developer

niklassalminen

Index record

Indexed: 18 Sep 2026
Lifecycle: Alive
Last seen: 18 Sep 2026

Identity audit (13)

Slug: site-timer-mozilla-org
Lifecycle state recorded: 18 Sept 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 18 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: 18 Sept 2026
Canonical URL: https://addons.mozilla.org/en-US/firefox/addon/site-timer

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