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Uptime Kuma

uptime.kuma.pet

Free plan Open source WebWindowsLinuxAPISelf-hosted
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Spec score 8.3 #13 of 30 in Internet Performance Monitoring Software

What it is

Uptime Kuma is a free, self-hosted monitoring tool for checking services and infrastructure. It can monitor HTTP(S), TCP, HTTP(S) keywords and JSON queries, WebSocket endpoints, Ping, DNS records, Push monitors, Steam game servers and Docker containers. Monitoring intervals can be as short as 20 seconds. You can create multiple status pages and associate them with specific domains; published pages cache results for five minutes and refresh on that schedule. Native notification options include Telegram, Discord, Gotify, Slack, Pushover and SMTP email, with more than 90 services listed. Apprise integration adds further notification choices. Proxy support and two-factor authentication are listed security features. Prometheus-compatible metrics are exposed at /metrics with basic authentication or an API key. Deployment documentation covers Docker Compose, Docker commands and non-Docker installation on major Linux distributions. It runs on Linux, Windows, web and API environments, and is released under the MIT License.

Spec sheet

What it does
Uptime Kuma is a self-hosted monitoring server that checks websites and services, sends alerts, and publishes status pages.Read 15 Oct 2026 · github.com
Purpose
Uptime Kuma is an easy-to-use self-hosted monitoring tool.Read 1 Oct 2026 · github.com
License
The software is released under the MIT License, which grants permission to use, copy, modify, publish, distribute, sublicense and sell copies.Read 1 Oct 2026 · github.com
Founded
2021Read 28 Sep 2026 · uptime.kuma.pet
API status
The API documentation describes an internal Socket.IO API plus REST endpoints for push monitors, badges, metrics and public status pages, and warns that it is not officially supported for third-party integrations.Read 15 Oct 2026 · github.com
Apple App Store praise
An App Store reviewer said the companion app is well made, runs well and makes Uptime Kuma monitoring easy to view on a phone.Read 15 Oct 2026 · apps.apple.com
Charts and certificates
Built-in views include ping charts and certificate information.Read 15 Oct 2026 · github.com
Check interval
Monitoring intervals can run every 20 seconds.Read 1 Oct 2026 · github.com
Content validation
HTTP keyword and HTTP JSON-query monitors can check response content in addition to reachability.Read 15 Oct 2026 · github.com
Demo
The project provides a temporary Frankfurt demo server whose data is deleted after 10 minutes.Read 1 Oct 2026 · github.com
Docker installation
Official instructions provide Docker Compose and docker run images, with persistent data stored in /app/data and port 3001 used by default.Read 15 Oct 2026 · github.com
Documentation depth
The GitHub wiki covers installation, updates, status pages, notifications, badges, Docker monitoring, maintenance, Prometheus, reverse proxies, development and translation.Read 15 Oct 2026 · github.com
Google Play complaint
Google Play reviewers report connection timeouts, inability to use two-factor authentication and navigation problems on some Android layouts.Read 15 Oct 2026 · play.google.com
HTTP monitoring
It monitors HTTP and HTTPS endpoints for availability.Read 15 Oct 2026 · github.com
Installation
Official installation instructions provide Docker Compose, Docker command and non-Docker installation for major Linux distributions.Read 1 Oct 2026 · github.com
Integration framework
The project integrates Apprise for additional notification services beyond its native providers.Read 15 Oct 2026 · github.com
Latest release
GitHub shows version 2.5.6 released on October 9, 2026, with a bug fix and dependency update.Read 15 Oct 2026 · github.com
Licence
The repository is released under the MIT License, allowing reuse, modification, redistribution and commercial use subject to retaining notices.Read 15 Oct 2026 · github.com
Limit: automation API
Better Stack reports that adding, updating or removing monitors through an API is unavailable, limiting workflow automation.Read 15 Oct 2026 · betterstack.com
Limit: documentation detail
Hysenlabs found that documentation gives broad monitor coverage but relatively few detailed configuration examples for individual check types.Read 15 Oct 2026 · hysenlabs.com
Limit: geographic monitoring
Hysenlabs characterizes Uptime Kuma as a single-server monitor without distributed probe locations, limiting multi-region perspective.Read 15 Oct 2026 · hysenlabs.com
Limit: multi-user access
Better Stack's guide says Uptime Kuma lacks multiple users and role-based access control, which can be unsuitable for larger teams.Read 15 Oct 2026 · betterstack.com
Limit: polling speed
Hysenlabs identifies the documented 20-second interval as a potential problem for services that need faster outage detection.Read 15 Oct 2026 · hysenlabs.com
Limit: redundancy
Better Stack says the product has no built-in data replication or automatic failover, so one failed instance can remove monitoring coverage.Read 15 Oct 2026 · betterstack.com
Maker identity
The GitHub account identifies Louis Lam as the Uptime Kuma maintainer and lists Hong Kong as his location.Read 15 Oct 2026 · github.com
Monitor types
It monitors HTTP(S), TCP, HTTP(S) keyword, HTTP(S) JSON query, WebSocket, Ping, DNS record, Push, Steam Game Server and Docker Containers.Read 1 Oct 2026 · github.com
Monitoring interval
The README documents 20-second monitoring intervals.Read 15 Oct 2026 · github.com
Notification integrations
Uptime Kuma also integrates with Apprise for additional notification services.Read 1 Oct 2026 · github.com
Notifications
Native notifications include Telegram, Discord, Gotify, Slack, Pushover and SMTP email, with more than 90 services listed.Read 15 Oct 2026 · github.com
Praise: notifications
The reviewer praised the breadth of notification options and said email alert configuration worked smoothly and reliably in testing.Read 15 Oct 2026 · matthewjayhunter.com
Praise: setup
The same reviewer reported that Docker Compose setup with a persistent volume reaches the web interface within minutes without a separate database server.Read 15 Oct 2026 · matthewjayhunter.com
Praise: user interface
An independent reviewer described the interface as visually clean, readable and easy to understand at a glance.Read 15 Oct 2026 · matthewjayhunter.com
Project scale
Louis Lam's GitHub profile lists the Uptime Kuma repository as a public JavaScript project with about 92.5 thousand stars and 8.6 thousand forks at page capture.Read 15 Oct 2026 · github.com
Prometheus
Prometheus-compatible metrics are available at the /metrics endpoint, with basic authentication or API-key authentication.Read 1 Oct 2026 · github.com
Protocol checks
Monitor types include TCP, WebSocket, ping, DNS records, push heartbeats, Steam game servers, and Docker containers.Read 15 Oct 2026 · github.com
Rating on Apple App Store
Uptime Kuma Manager is rated 4.3 out of 5 from 41 ratings.Read 15 Oct 2026 · apps.apple.com
Rating on Google Play
Uptime Kuma Manager is shown with 3.1 out of 5 from 75 reviews.Read 15 Oct 2026 · play.google.com
Runtime requirements
Bare-metal installation requires Node.js 20.4 or newer, Git and PM2 for background operation.Read 15 Oct 2026 · github.com
Security advisories
GitHub lists high and moderate advisories including ping-badge denial of service, server-side template injection, file reads, SSRF-related exposure and local file inclusion.Read 15 Oct 2026 · github.com
Security controls
Two-factor authentication and reverse-proxy support are listed features.Read 15 Oct 2026 · github.com
Security features
The README lists proxy support and two-factor authentication support.Read 1 Oct 2026 · github.com
Security reporting
Security issues are requested through GitHub Security Advisories, and the policy says public issue reports and third-party bounty platforms are not accepted.Read 15 Oct 2026 · github.com
Status pages
The application supports multiple public status pages and can map pages to specific domains.Read 15 Oct 2026 · github.com
Status-page caching
Published status pages cache results for five minutes and refresh every five minutes.Read 1 Oct 2026 · github.com
Storage limitation
The project warns that NFS is unsupported because file-locking problems can corrupt the SQLite data, so local storage or a local volume is required.Read 15 Oct 2026 · github.com
Support channels
The README directs users to Google, GitHub Issues and the Uptime Kuma subreddit rather than email support.Read 15 Oct 2026 · github.com
Supported operating systems
Non-Docker installation supports major Linux distributions and Windows 10 x64 or Windows Server 2012 R2 x64 and newer.Read 15 Oct 2026 · github.com
Supported versions
The security policy marks Docker tags 2, 2-slim, next, next-slim, 2-rootless and 2-slim-rootless as supported.Read 1 Oct 2026 · github.com
Unsupported environments
The installation guide marks FreeBSD, OpenBSD, NetBSD, Replit and Heroku as unsupported.Read 15 Oct 2026 · github.com

Plans and prices

Self-hosted open-source Free Docker or Node.js deployment · HTTP(S), TCP, ping, DNS, WebSocket, push, Steam and Docker checks · 90+ notification services Read 15 Oct 2026 · matthewjayhunter.com
Self-hosted Uptime Kuma Free MIT-licensed software · self-hosted deployment Read 1 Oct 2026 · github.com

Every Uptime Kuma plan and price →

Strong points and limits

Strong points

  • Monitors many protocols, DNS, containers and game servers
  • Checks can run every 20 seconds
  • Multiple domain-mapped status pages
  • More than 90 notification services listed
  • MIT License permits modification and redistribution

Limits

  • Published status pages refresh every five minutes
  • Self-hosted deployment requires installation and administration
  • Windows is listed alongside self-hosted and Linux platforms

Who it suits

It suits people who need self-hosted uptime, DNS or synthetic monitoring with status pages and many notification options. Linux administrators can choose Docker or non-Docker installation paths.

Verdict

Uptime Kuma combines broad monitor coverage, short checking intervals and flexible status pages in a free self-hosted package. Its five-minute status-page cache and administration requirements matter when immediate public updates or managed hosting are needed.

Where Specifiction places it

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