Dev tools · alternatives · 2026
24 alternatives to OnlineOrNot
We alert you before your customers do.
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. OnlineOrNot launched in 2019; newer entries below may have overtaken it.
- 1
Browser-based uptime checks for your critical pages.
2021 · onlineornot.com · its alternatives →
- 2
Uptime Monster▲208Monitor your websites and servers from one place
2024 · uptimemonster.com · its alternatives →
- 3
Yes, it's open source: https://github.com/lissy93/web-check :) Why I'm building this? There are a lot of tools out there for discovering meta and security data relating to a website, IP or server. But currently, there isn't anything that does everything, all in one place and without a paywall/ user sign up. It's still a WIP, and I'm working on a new version, with some more comprehensive checks, so any feedback would be much appreciated :)
2024 · v1.web-check.xyz · its alternatives →
- 4
Hyperping▲350Uptime monitoring made beautifully simple and reliable
2018 · hyperping.com · its alternatives →
- 5
Get instant alerts when your website goes down.
2023 · uptime-monitor.io · its alternatives →
- 6
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- 8
ϟ Website monitoring — beautiful, simple and inexpensive.
2014 · updown.io · its alternatives →
- 9UW
2024 · uptime.website · its alternatives →
- 10
Instant uptime alerts. Stay online, stay confident.
Dec 2025 · web-alert.io · its alternatives →
- 11WS
Explore WebGazer for reliable uptime and cron job monitoring, plus customizable status pages. Trusted globally for enhancing website performance and uptime.
2018 · webgazer.io · its alternatives →
- 12
- 13UW
2015 · uptimebutler.com · its alternatives →
- 14
- 15
Simple, easy to use and free website uptime monitoring tool
2025 · dialogsmonitor.com · its alternatives →
- 16
- 17
Unlimited SMS and email notifications.
2012 · servercheck.in · its alternatives →
- 18
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- 20
SpeedMonitor▲10Automate your website's page speed testing for free!
2019 · speedmonitor.io · its alternatives →
- 21
- 22
DownChecker▲11Free website monitoring service - keep websites in check
2025 · downchecker.bekhruz.com · its alternatives →
- 23
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 →
- 24
Check if your website is up or down from 15 global locations in seconds. Free, instant, no sign-up required. Get alerted the moment it goes down.
2024 · pulsetic.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 →