Life & fun · alternatives · 2026

24 alternatives to Calibre

Comprehensive web performance monitoring

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Calibre launched in 2014; newer entries below may have overtaken it.

1. 1
   Speedometer▲70

   Browser benchmark for measures web app responsiveness

   2014 · browserbench.org · its alternatives →

2. 2
   Calibre Test Profiles – Test your sites under real world conditions▲57

   Hi HN! I'm Ben, the solo founder of Calibre Analytics: https://calibreapp.com. Calibre monitors websites and applications in a clean-room testing environment from all over the world. Up until January Calibre has been an "inbetween other things" / evenings / holidays kind of project. (Only, oops—I did that for four years.). Last year I knuckled down to get into the position where I could work on it full time. I've spent the last 8 weeks working on "Test profiles" (The launch post is here: https://medium.com/get-calibre/announcing-test-profiles-and-...)…

   2017 · calibreapp.com · its alternatives →

3. 3
   Speedometer 3.0▲131

   Benchmarking app performance on the modern web

   2024 · github.com · its alternatives →

4. 4
   Calibre 2.0▲76

   The one stop solution to all your ebook needs

   2014 · its alternatives →

5. 5
   Calibrate Rapid▲92

   SaaS Evaluation Service

   2014 · its alternatives →

6. 6
   Visible▲126

   Performance insights for startups and their investors.

   2014 · visible.vc · its alternatives →

7. 7
   Calq▲71

   Custom analytics for mobile and web apps.

   2014 · xocdiaonlinetienthat.com · its alternatives →

8. 8
   Boundary Free▲74

   Server and App Monitoring

   2014 · domaineasy.com · its alternatives →

9. 9
   Calibre CLI▲38

   Automating monitoring and improving web performance

   2018 · calibreapp.com · its alternatives →

10. 10
    Bouncelytics▲77

    Finding website bottlenecks just got easier

    2016 · its alternatives →

11. 11
    Glimpse▲70

    The Diagnostics platform of the web

    2015 · xcor.com · its alternatives →

12. 12
    Packetbeat▲71

    Open source application monitoring & performance management

    2015 · its alternatives →

13. 13
    Is my site fast enough▲147

    Monitor how fast your site is compared to your competitors

    2015 · its alternatives →

14. 14
    TrackDuck▲92

    Visual feedback & bug tracking, from web to Slack

    2015 · askanydifference.com · its alternatives →

15. 15
    Appneta▲68

    Full-stack monitoring for web applications

    2014 · broadcom.com · its alternatives →

16. 16
    AppEnlight▲61

    Performance and error monitoring

    2014 · appenlight.com · its alternatives →

17. 17
    PageGauge▲92

    Quickly assess your website's usability

    2015 · its alternatives →

18. 18
    Vector▲69

    Netflix's On-Host Performance Monitoring Tool

    2015 · github.com · its alternatives →

19. 19
    Peer▲87

    Feedback and performance for today's workforce

    2015 · peer.com · its alternatives →

20. 20
    Limitless▲90

    A productivity companion for Chrome

    2013 · chromewebstore.google.com · its alternatives →

21. 21
    Page Health▲95

    Track the pulse of your site's performance

    2021 · its alternatives →

22. 22
    Catch App [Web]▲77

    The pulse of work.

    2014 · getcatchapp.com · its alternatives →

23. 23
    New Relic▲16

    fix application performance problems in real time.

    2016 · newrelic.com · its alternatives →

24. 24
    Perfmonkey▲63

    Keep track of your website's rendering performance.

    2014 · 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 →