Dev tools · alternatives · 2026

24 alternatives to Tell Me When Down

Uptime monitoring & a free website security scan

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

1
Simple Uptime▲203
Monitor the health of your websites and servers inside Slack
2024 · simpleuptime.app · its alternatives →
2
Uptime Monitor▲76
Get instant alerts when your website goes down.
2023 · uptime-monitor.io · its alternatives →
3
UptimeRobot App 2.0▲199
Web, SSL, ports & Cron-jobs monitoring
2021 · uptimerobot.com · its alternatives →
4
Downtime Monkey▲69
Website downtime alerts & uptime monitoring
2018 · downtimemonkey.com · its alternatives →
5
Checkify▲77
Super minimal, simple and inexpensive 24/7 uptime monitoring
2021 · its alternatives →
6
Odown▲74
Simple and reliable uptime monitoring service
2021 · odown.com · its alternatives →
7
Whydown▲3
Website monitoring with instant downtime alerts.
Jul 2026 · whydown.org · its alternatives →
8
easyping.▲110
Uptime monitoring made super easy 📯.
2020 · easyping.io · its alternatives →
9
ApiChecker▲104
Reliable uptime and performance monitoring for your services
2019 · its alternatives →
10
Uptime Monitor by HetrixTools▲81
Minimize your downtime by being the first to know about it
2021 · hetrixtools.com · its alternatives →
11
Website Checker▲110
Sends you alerts when your website goes down.
2018 · its alternatives →
12
Dialogs Monitor▲16
Simple, easy to use and free website uptime monitoring tool
2025 · dialogsmonitor.com · its alternatives →
13
Apollo▲101
Reliable uptime monitoring, status pages & much more
2020 · its alternatives →
14
UptimeWatchdog▲2
Know when your website goes down before your users do.
May 2026 · uptimewatchdog.com · its alternatives →
15
66uptime▲98
Self-hosted & easy to use uptime monitoring software.
2022 · 66uptime.com · its alternatives →
16
exit1.dev▲11
I'm trying to disrupt the insane pricing of uptime monitoring. I hope you'll help me out. I'm trying to create the absolute cheapest dev monitoring tool on the market, while still being competitive with all the others. This means $3/month plan, while still having monitoring for: Website, REST API, UDP/TCP, ICMP, Heartbeat/CRON, WS/WSS, DNS, Domain Intel/expiry and SSL. Everything with unlimited alerts through webhooks. I'm also taking an unlimited approach to the amount of checks you can have. I'd love to hear your thoughts.
2025 · exit1.dev · its alternatives →
17
Web-alert.io — Uptime Monitoring▲7
Instant uptime alerts. Stay online, stay confident.
Dec 2025 · web-alert.io · its alternatives →
18UW
Uptime.website – A free uptime check tool▲11
2024 · uptime.website · its alternatives →
19
PingWatch — Uptime Monitoring▲16
Monitor your websites 24/7. Get instant downtime alerts.
Jun 2026 · pingwatch.netlify.app · its alternatives →
20
BoltAPI▲62
We monitor your website & API so you don't have to
2021 · boltapi.com · its alternatives →
21
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 →
22
Updown.io, a simple and cheap website monitoring service▲38
ϟ Website monitoring — beautiful, simple and inexpensive.
2014 · updown.io · its alternatives →
23
Uppi▲34
Uptime monitoring and alerting, open-source & free
2025 · its alternatives →
24
24/7 Uptime, SSL & SEO Alerts▲8
Website monitoring & health checks
2025 · 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 →