Dev tools · alternatives · 2026

24 alternatives to Scanerr

Your site's primary care doctor.

Scanerr monitors websites for changes and issues by tracking over 90 web metrics, running visual regression tests, and performing automated unit testing. It alerts users when problems arise, helping site owners catch… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Scanerr launched in 2023; newer entries below may have overtaken it.

1. 1
   ScanR▲180

   API to detect text in images, built for developers

   2015 · scanr.xyz · its alternatives →

2. 2
   SEO-Checker.io▲240

   The complete, free SEO audit tool

   2022 · seo-checker.io · its alternatives →

3. 3
   Sitechecker▲303

   Toolkit to measure and track website SEO performance

   2020 · sitechecker.pro · its alternatives →

4. 4
   MVP Tester▲284

   Don't waste your time building the wrong idea

   2024 · its alternatives →

5. 5
   Nibbler▲313

   A tool for checking your site's accessibility, SEO, & more

   2014 · silktide.com · its alternatives →

6. 6
   Free Monitoring Suite by WebGazer▲338

   Monitoring for websites, APIs, and cron jobs

   2024 · webgazer.io · its alternatives →

7. 7
   Phantom Analyzer▲169

   A real-time website scanner to see what trackers are lurking

   2020 · usefathom.com · its alternatives →

8. 8
   SEO Analyzer By Neil Patel▲267

   A free SEO analyzer for your site

   2019 · neilpatel.com · its alternatives →

9. 9
   accessScan▲272

   Test any website to see if it’s accessible, for free!

   2020 · accessibe.com · its alternatives →

10. 10
    SEOptimer▲155

    SEO audit & reporting tool

    2021 · seoptimer.com · its alternatives →

11. 11
    Serpstat Website SEO Checker▲191

    Check your website's SEO, analyze competitors and keywords

    2019 · serpstat.com · its alternatives →

12. 12
    Cronitor▲170

    Monitor cron jobs, micro-services and almost anything else.

    2017 · cronitor.io · its alternatives →

13. 13ME
    Monitorbook – Easily track anything on the web▲134

    2014 · monitorbook.com · its alternatives →

14. 14
    On-Page SEO Checker▲81

    A tool for SEO analysis of website pages and finding errors

    2022 · pr-cy.io · its alternatives →

15. 15
    ImageKit Website Analyzer▲61

    Free tool to automate media performance monitoring

    2024 · imagekit.io · its alternatives →

16. 16
    Site Audit by cognitiveSEO▲117

    Audit your site for improved SEO and conversions!

    2018 · cognitiveseo.com · its alternatives →

17. 17
    Seomator▲110

    Check SEO issues and get the results in a white-label report

    2016 · seomator.com · its alternatives →

18. 18
    SEO Heartbeat▲95

    Save your website from flat-lining with automated reports.

    2019 · its alternatives →

19. 19
    SEO checker PR-CY▲89

    Check all your website’s SEO metrics through our service

    2021 · pr-cy.io · its alternatives →

20. 20
    Website Health Checker▲10

    Seo Checker and Website Health

    2025 · siteacademy.co.uk · its alternatives →

21. 21
    SiteAnalyzer▲12

    Website SEO Crawler for technical audit of the websites

    2019 · site-analyzer.pro · its alternatives →

22. 22
    BytesMatter▲71

    Web monitoring and analytics through the eyes of your users

    2021 · its alternatives →

23. 23
    Website Trust Checker▲68

    Check the credibility of any website in one click

    2022 · pr-cy.io · its alternatives →

24. 24
    SiteAnalyzer▲11

    Comprehensive SEO analysis to boost your website performance

    2025 · site-analyzer.ru · 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 →