Growth · alternatives · 2026

24 alternatives to Alert91

Building Alert91 — website monitoring for web agencies

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

1. 1
   Free Monitoring Suite by WebGazer▲338

   Monitoring for websites, APIs, and cron jobs

   2024 · webgazer.io · its alternatives →

2. 2
   SimpleOps▲297

   Keep your websites up and never lose customers

   2020 · simpleops.io · its alternatives →

3. 3
   ApiChecker▲104

   Reliable uptime and performance monitoring for your services

   2019 · its alternatives →

4. 4
   Monitor v2 [Retired]▲129

   Alert your entire team when your site goes offline.

   2015 · brandongreen.co · its alternatives →

5. 5
   Scouts by Yutori▲182

   Your always-on AI agents to monitor the web, now on iOS

   Dec 2025 · yutori.com · its alternatives →

6. 6
   Odown▲74

   Simple and reliable uptime monitoring service

   2021 · odown.com · its alternatives →

7. 7
   StatusPing▲78

   Monitor everything about your website

   2021 · its alternatives →

8. 8
   Uptime Monitor▲76

   Get instant alerts when your website goes down.

   2023 · uptime-monitor.io · its alternatives →

9. 9
   Pulsewave▲93

   The simplest uptime monitoring for developers & teams

   2019 · apps.shopify.com · its alternatives →

10. 10
    Web-alert.io — Uptime Monitoring▲7

    Instant uptime alerts. Stay online, stay confident.

    Dec 2025 · web-alert.io · its alternatives →

11. 11
    AlertsDown▲5

    Simple uptime/SSL monitor with instant alerts

    Dec 2025 · alertsdown.com · its alternatives →

12. 12
    Tell Me When Down▲6

    Uptime monitoring & a free website security scan

    Jul 2026 · tellmewhendown.com · its alternatives →

13. 13
    The Witness▲8

    When a page updates, you understand why.

    Feb 2026 · its alternatives →

14. 14
    24/7 Uptime, SSL & SEO Alerts▲8

    Website monitoring & health checks

    2025 · its alternatives →

15. 15
    UptimeEye▲8

    Your homepage is up. Your checkout might not be.

    2025 · uptimeeye.com · its alternatives →

16. 16
    Whydown▲3

    Website monitoring with instant downtime alerts.

    Jul 2026 · whydown.org · its alternatives →

17. 17
    SiteIsDead.dev▲11

    Phone alerts for website downtime | real-time monitoring

    Nov 2025 · siteisdead.dev · its alternatives →

18. 18
    PerkyDash▲5

    Monitor your clients' sites. Sell it as your own service.

    Mar 2026 · perkydash.com · its alternatives →

19. 19
    What are the best features you want to find in uptime monitoring?▲14

    Simple website uptime monitoring tool to monitor your websites and APIs combined with public status pages. We'll also monitor your SSL certificates and notify you you through multiple alert channels if something happens.

    2021 · odown.io · its alternatives →

20. 20
    AlertBot▲6

    The Leader in Web Transaction Monitoring

    2021 · alertbot.com · its alternatives →

21. 21
    Monitor 365▲9

    24/7 website availability and security monitoring platform

    2025 · its alternatives →

22. 22WS
    Web service for monitoring web pages (weekend project)▲11

    Type in URL and keyword to look for, set search interval and forget it. Once keyword you are looking for appears on site you will receive email notification with short description and link to article (hopefully :D :D :D)

    2013 · watchit4.me · its alternatives →

23. 23
    Webeye - Uptime Monitoring▲7

    Modern and simple performance and uptime monitoring

    2020 · webeye.io · its alternatives →

24. 24
    UpStat▲7

    Uptime monitoring - WhatsApp alerts, status page & more

    Mar 2026 · 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 →