Life & fun · alternatives · 2026

24 alternatives to Firefox Monitor

See if you’ve been part of an online data breach.

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 2020; newer entries below may have overtaken it.

1. 1
   Firefox Monitor▲6

   See if you’ve been part of an online data breach

   2019 · monitor.mozilla.org · its alternatives →

2. 2
   Firefox Monitor▲9

   Your right to be safe from hackers starts here

   2018 · monitor.mozilla.org · its alternatives →

3. 3
   Do hackers know me?▲398

   See yourself through the eyes of a hacker

   2024 · dohackersknow.me · its alternatives →

4. 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. 5
   Watch Your Hack▲292

   A manual to protect yourself against hackers 👨‍💻

   2018 · watchyourhack.com · its alternatives →

6. 6
   monitor backlinks▲220

   Monitor backlinks to your (or your competitors') website

   2015 · seoptimer.com · its alternatives →

7. 7
   Find HN threads about the page you're browsing▲260

   Web Extension: Easily find Hacker News discussions about the page you're currently browsing. - pinoceniccola/what-hn-says-webext

   2020 · github.com · its alternatives →

8. 8
   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 →

9. 9
   WebARX▲147

   Protect websites from plugin vulnerabilities

   2019 · patchstack.com · its alternatives →

10. 10
    Track This by Firefox▲121

    We open 100 tabs to make trackers think you're someone else

    2019 · trackthis.link · its alternatives →

11. 11
    Newsit▲63

    Find the discussion around the page you're looking at!

    2018 · newsit.benwinding.com · its alternatives →

12. 12
    Hacker News Front Page Explorer▲150

    A database of top ranking Hacker News front page posts

    2020 · harishgarg.gumroad.com · its alternatives →

13. 13
    Hacksy by Decoded▲175

    Check if your data has been leaked & get a better password

    2017 · its alternatives →

14. 14
    Data Breaches▲94

    Easily get information on data breaches, regulators & fines

    2020 · its alternatives →

15. 15
    Data Breach Checker▲101

    Check if your email address was compromised

    2020 · burnermail.io · its alternatives →

16. 16
    Firefox Focus▲168

    A free, fast and easy to use private browser.

    2016 · blog.mozilla.org · its alternatives →

17. 17MA
    Monitor a Hacker News post over time▲78

    2020 · hacker-news-analytics.christianfei.com · its alternatives →

18. 18
    Hacker Menu▲75

    Check Hacker News from your Mac menu bar

    2015 · hackermenu.io · its alternatives →

19. 19
    I Built a “Google Alerts” for Hacker News▲151

    2019 · pipedream.com · its alternatives →

20. 20
    Pingkat▲72

    Continuously monitor your website's public resources

    2023 · its alternatives →

21. 21
    Firefox 89▲147

    Modern, clean Firefox clears the way to your online needs

    2021 · firefox.com · its alternatives →

22. 22
    Snoopie▲161

    See who's watching you browse the web

    2016 · chromewebstore.google.com · its alternatives →

23. 23
    Netflix Cheating test▲121

    Find out what kind of cheater you are

    2017 · its alternatives →

24. 24
    ZeroFOX▲78

    Identify and Prevent Cyber Attacks Across Social Media

    2014 · zerofox.com · its alternatives →

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 →