Life & fun · alternatives · 2026

24 alternatives to Firefox Monitor

Your right to be safe from hackers starts here

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Firefox Monitor launched in 2018; newer entries below may have overtaken it.

1
Firefox Monitor▲2
See if you’ve been part of an online data breach.
2020 · monitor.mozilla.org · its alternatives →
2
WebARX▲147
Protect websites from plugin vulnerabilities
2019 · patchstack.com · its alternatives →
3
Firefox Monitor▲6
See if you’ve been part of an online data breach
2019 · monitor.mozilla.org · its alternatives →
4
What every browser knows about you▲553
This is a demonstration of all the data your browser knows about you. All this data can be accessed by any website without asking you for any permission.
2016 · webkay.robinlinus.com · its alternatives →
5
Watch Your Hack▲292
A manual to protect yourself against hackers 👨‍💻
2018 · watchyourhack.com · its alternatives →
6
We got tired of asking 'What browser are you using?' and created this▲521
Instantly detect your browser, operating system, screen resolution, and more. Get a shareable link with your browser details for support agents.
2012 · aboutmybrowser.com · its alternatives →
7
Do hackers know me?▲398
See yourself through the eyes of a hacker
2024 · dohackersknow.me · its alternatives →
8
Privacy.com for Firefox▲261
Get a new card for every purchase with just one click
2017 · privacy.com · its alternatives →
9
Blurs▲226
Hide your browser info
2024 · instapaper.com · its alternatives →
10
Firefox Relay▲252
Hide your real email address to help protect your identity.
2021 · relay.firefox.com · its alternatives →
11
Firefox Focus▲168
A free, fast and easy to use private browser.
2016 · blog.mozilla.org · its alternatives →
12
Track This by Firefox▲121
We open 100 tabs to make trackers think you're someone else
2019 · trackthis.link · its alternatives →
13
How privacy-friendly is your site?▲200
This tool helps you check what data-protecting measures a site has taken to help you exercise control over your privacy.
2018 · webbkoll.dataskydd.net · its alternatives →
14UC
URL Canary – Get an alert when someone finds your secrets▲273
2018 · urlcanary.com · its alternatives →
15
Hackernews-Button – Bloom Filter-based, private HN browsing extension▲74
Privacy-preserving Firefox extension linking to Hacker News discussion; built with Bloom filters and WebAssembly - jstrieb/hackernews-button
2021 · github.com · its alternatives →
16EW
Explore what the browser exposes about you▲275
I built a tool that reveals the data your browser exposes automatically every time you visit a website. GitHub: https://github.com/neberej/exposedbydefault Demo: https://neberej.github.io/exposedbydefault/ Note: No data is sent anywhere. Everything runs in your browser.
Nov 2025 · neberej.github.io · its alternatives →
17
Firefox 70▲14
The browser that respects your privacy automatically
2019 · firefox.com · its alternatives →
18
Pingkat▲72
Continuously monitor your website's public resources
2023 · its alternatives →
19
Firefox Enterprise▲102
Firefox for enterprises that want control of their data
14d ago · blog.mozilla.org · its alternatives →
20
Waterfox▲126
The 100% fresh, free-range, ethical browser
2018 · waterfox.com · its alternatives →
21
monitor backlinks▲220
Monitor backlinks to your (or your competitors') website
2015 · seoptimer.com · its alternatives →
22
Hexometer 3.0▲212
The most comprehensive website monitoring app
2021 · hexometer.com · its alternatives →
23
I Built a “Google Alerts” for Hacker News▲151
2019 · pipedream.com · its alternatives →
24
Extension Monitor▲87
Track browser extension installations / threats in real-time
2019 · extensionmonitor.com · its alternatives →

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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →