Whitespace.
See who already built your idea — and the space they left open.

CLUSTER AVAILABILITY-MONITORING-UPTIME · 88 ENTRIES · EARLIEST ENTRY 2016-07-14

Uptime monitoring and status pages

This cluster covers open-source and self-hosted uptime monitoring tools that check websites, APIs, and services, alert on outages, and often publish status pages. Dated entries before the index began appear sporadically from 2016-07 through 2025, then concentrate in 2026, with the largest monthly counts in May, June, and July 2026. Traction leaders by activity signal are WebMetricsX (7 stars), pulse (12 stars), and middle-monitor (3 stars).

Entry timeline

ENTRY TIMELINE

JUL 2016: 1SEP 2017: 1NOV 2020: 1MAR 2021: 2OCT 2021: 2NOV 2021: 1AUG 2022: 1OCT 2024: 1JUN 2025: 1JUL 2025: 1OCT 2025: 2JAN 2026: 2FEB 2026: 2MAR 2026: 2APR 2026: 2MAY 2026: 3JUN 2026: 4JUL 2026: 4AUG 2026: 21SEP 2026: 25OCT 2026: 9
JUL 2016OCT 2026

Each bar is the month a member carries, which is a creation date where the source published one and a crawl date otherwise. Nothing in the index was found before 11 August 2026, and coverage broadened sharply on 14–15 August, so a bar from then on reports how much we found that month, not how much was built; an earlier bar reports how far back a member's own source dated it — not how long we have been watching.

Members by activity

Activity signals, not revenue.

Build origin · 3 hand-coded · 17 unlabelled

Operator · 11 hobby · 1 indie · 2 open source · 6 unlabelled

Two labels per entry, never collapsed into one: how it was built, and who stands behind it. Counted over the 20 listed below. Unlabelled means nothing has decided yet — not that the answer is small.

  1. 21veglia0★21 dayslivehand-codedhobbySelf-hosted uptime monitor that records its own downtime and reports minutes of missed observation.
  2. 22pulseguard0★19 days—hobbySelf-hosted uptime monitoring tool that probes HTTP, TCP, and DNS endpoints, audits SSL certificates, and displays a live status page.
  3. 23uptimeforge0★6 dayslivehobbyHTTP uptime monitoring web app that checks endpoints, detects incidents, sends email alerts, and hosts public status pages.
  4. 24raqib0★7 days—hobbySelf-hosted website monitor that watches pages for content changes, availability, and security-header or TLS regressions and sends one alert per state change.
  5. 25pulsewatch0★4 days—Web app that monitors website uptime and latency, runs scheduled health checks, and displays logs on a dashboard.
  6. 26PulseKeeper0★17 days—Web app that monitors website and API uptime, records response times, and opens incidents on failures for developers.
  7. 27noc-dashboard0★17 days—hobbySelf-hosted network operations dashboard that monitors uptime of servers and services and sends SMS alerts when they go down.
  8. 28StatusForge0★9 days—hobbySelf-hosted uptime and job monitor that periodically checks endpoints, tracks heartbeats, opens incidents, and sends notifications.
  9. 29Kapuluh-Studio-STATUS0★20 days—hobbySelf-hosted status page that monitors service health via HTTP, TCP, and heartbeats, and manages incidents, maintenance, and multilingual notifications.
  10. 30input-status-hud2★1 mo—hobbyDesktop app that monitors a service's status and notifies users via system notifications when it degrades or recovers.
  11. 31pingbeacon0★2 molivehand-codedindieFree and open-source uptime monitoring tool with unlimited monitors, public status pages, and Slack/email alerts, deployable self-hosted.
  12. 32site-status-v30★1 molivehobbyWeb-based status page that displays uptime history and incidents from monitoring data, with a 60-day availability calendar.
  13. 33steadypage0★12 days—Uptime monitoring service that tracks application availability and publishes public status pages for indie apps.
  14. 34uptime1★1 molivehobbySelf-hosted uptime monitoring app that tracks website availability, provides public dashboards, live updates, and notifications.
  15. 35System-Health-Incident-Monitoring-Dashboard1★1 molivehand-codedhobbyWeb application that monitors website uptime, tracks response times and incidents, and sends email alerts on status changes.
  16. 36uptime-kuma0★22 daysliveopen sourceSelf-hosted web app that monitors uptime of websites and services and sends alerts when they go down.
  17. 37uptimepulse1★1 mo—Uptime monitoring service that tracks service availability, charts response times, and alerts teams when incidents occur.
  18. 38TinyUptimeRobot1★1 moliveSelf-hosted uptime monitor that checks websites, SSL certificates, and database availability and sends alerts through Slack, email, and chat.
  19. 39wolfXmonitor2★1 moliveOpen-source uptime monitoring service that checks websites and APIs in real time, sends instant email alerts, and provides public status pages.
  20. 40Nightbell0★11 daysliveopen sourceUptime monitoring app that runs on a phone, checking HTTP endpoints and web page elements, charting status, and alerting on failures.

Ranked by traction, highest first, and paged 20 at a time — this is a window on the cluster, never the whole of it. Ties are broken by a stable id so a product cannot appear on two pages or fall between them. Browse every cluster.