Uptime monitors in 2026

Commercial uptime monitors

1. 1
   Pingdom SolarWinds

   Swedish website monitoring software company

   Complete system Production-ready A business wants established external monitoring of website uptime and performance.

   25 readers a month Since 2005 Commercial
2. 2
   UptimeRobot UptimeRobot

   Start monitoring in 30 seconds. Use advanced SSL, keyword and cron monitoring. Get notified by email, SMS, Slack and more. Get 50 monitors for FREE!

   Complete system Production-ready You want simple, cheap or free monitoring of a handful of sites with alerts.

   Commercial
3. 3
   Better Stack Uptime Better Stack

   The most reliable uptime monitoring. Get 10 monitors, 10 heartbeats and a status page with 3-minute checks totally FREE.

   Complete system Production-ready A small engineering team wants uptime checks, on-call and status pages in one inexpensive tool.

   Commercial
4. 4
   Checkly Checkly

   The only monitoring platform built from the ground up to be operated by developers and agents to give teams a clear signal of application health.

   Developer tool Production-ready Developers want end-to-end tests of critical user flows running as production monitoring from the same code.

   Commercial

New open-source projects

1. 1
   Pulsy.org SelmiAbderrahim

   Pulsy is a free, open-source, self-hosted uptime monitoring platform with incident tracking, TLS certificate checks, multi- channel alerts, and public status pages

   Complete system Experimental Only for trying out; established tools cover the same features.

   ★ 140 AGPL-3.0 TypeScript Active, pushed 5 days ago

Open-source uptime monitors

Complete systems you can adopt 7

1. 1
   Uptime Kuma louislam

   A fancy self-hosted monitoring tool

   Complete system Production-ready You want an easy, UptimeRobot-style monitor on your own server for a homelab or small business.

   ★ 93k MIT JavaScript Active, pushed 2 days ago
2. 2
   Gatus TwiN

   Automated developer-oriented status page with alerting and incident support

   Complete system Production-ready Developers want uptime checks defined as config in Git, with assertions on response content and timing.

   ★ 12k Apache-2.0 Go Active, pushed 5 days ago
3. 3
   Checkmate bluewave-labs

   Checkmate is an open-source, self-hosted tool designed to track and monitor server hardware, uptime, response times, and incidents in real-time with beautiful visualizations. Don't be shy, join here: https://discord.com/invite/NAb6H3UTjK :)

   Complete system Usable You want an Uptime Kuma-style monitor that also tracks server CPU, memory and disk.

   ★ 11k AGPL-3.0 TypeScript Active, pushed 2 days ago
4. 4
   Openstatus openstatusHQ

   Open-source status page, incident response and uptime monitoring

   Complete system Usable You need a public status page plus synthetic uptime checks and prefer an open-source vendor.

   ★ 9.2k AGPL-3.0 TypeScript Active, pushed 5 days ago
5. 5
   Peekaping 0xfurai

   Open Source Uptime Kuma Alternative

   Complete system Experimental You want Uptime Kuma-style monitoring with a stronger API and backend and accept a young project.

   ★ 1.2k MIT Go Active, pushed 15 days ago
6. 6
   Kuvasz kuvasz-uptime

   Kuvasz (pronounce as [ˈkuvɒs]) is an open-source uptime and SSL monitoring service, with multiple notification channels, status pages, IAC support via YAML, Prometheus integration, a complete REST API and many more!

   Complete system Usable You want uptime monitoring configured as code and exported to Prometheus.

   ★ 667 AGPL-3.0 Kotlin Active, pushed 10 days ago
7. 7
   Maintenant kOlapsis

   Self-hosted monitoring for Docker, Kubernetes and uptime. Single Go binary, no agent config, live alerts. Drop a container, your stack is monitored.

   Complete system Experimental You run a homelab or small container stack and want monitoring that configures itself.

   ★ 532 Apache-2.0 Go Active, pushed 4 days ago

Building blocks for your own system 1

1. 1
   Laravel-uptime-monitor spatie

   A powerful and easy to configure uptime and ssl monitor

   Building block Production-ready You run Laravel and want uptime checks inside your own app.

   ★ 1.1k MIT PHP Active, pushed 11 days ago

Templates and starters 2

1. 1
   Upptime upptime

   ⬆️ GitHub Actions uptime monitor & status page by @AnandChowdhary

   Template or starter Production-ready You want a free status page and basic uptime checks without running any server.

   ★ 17k MIT Markdown Active, pushed 6 days ago
2. 2
   cState cstate

   🔥 Open source static (serverless) status page. Uses hyperfast Go & Hugo, minimal HTML/CSS/JS, customizable, outstanding browser support (IE8+), preloaded CMS, read-only API, badges & more.

   Template or starter Usable You want a fast static status page and are happy to post incidents by hand.

   ★ 2.9k MIT HTML Active, pushed 16 days ago

All 29 open-source uptime monitoring projects

Compared head to head

Also under monitoring and observability tools

Open-source licenses

• Permissive: 21. Use it anywhere, including in closed products. You keep the copyright notice; Apache-2.0 also grants patent rights.
• Network copyleft: 5. Like GPL, and running a changed version as a web service counts as distributing it, so its users get the source too.
• Strong copyleft: 2. If you distribute the program or anything built on it, you must release the whole source under the same license.
• Weak copyleft: 1. Changes to the licensed files must be shared, but you can link them into a closed program.

Languages

TypeScript 8, JavaScript 4, Go 4, PHP 4, Markdown 2, HTML 1, Kotlin 1, Rust 1, Python 1, Ruby 1, Svelte 1 and Shell 1.