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MonSpark vs Uptime Monitor

Both stand on uptime monitoring software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.

MonSpark

Free plan APIExtensionWeb

MonSpark covers a broad set of website and server checks, with multiple alert routes and customer-domain status pages. Its free plan has a five-website uptime limit, and arranging the trial requires contacting the company.

Visit MonSpark

Uptime Monitor

Free plan APISelf-hostedWeb

Uptime Monitor provides broad protocol monitoring, grouped health views, status pages, and alert routing in a self-hosted package. Its retention periods differ by data granularity, while deployment and ongoing infrastructure remain your responsibility.

Visit Uptime Monitor

The facts

MonSparkUptime Monitor
Free planYesYes
Open sourceNot publishedNot published
Runs onAPI, Extension, WebAPI, Self-hosted, Web
Lowest paid planNot publishedNot published
Plans publishedNoneNone
MakerMonSparkNot published
Websitemonspark.comuptime-monitor.org
On uptime monitoring software#15 of 48#28 of 48

MonSpark: what it does well

  • Monitors website, web application, and server metrics.
  • Sends alerts through email, SMS, and voice calls.
  • Status pages can use a customer’s own domain.
  • Free plan covers uptime monitoring for up to 5 websites.
  • API includes PCI-DSS script verification and inventory endpoints.

What to know first

  • Free plan limits uptime monitoring to 5 websites.
  • The free trial requires contacting the company.
  • WhatsApp and Telegram are marked as coming soon on the integrations page.

Uptime Monitor: what it does well

  • Monitors 17 protocols
  • Self-hosted with no external tracking
  • Real-time WebSocket status updates
  • Responsive, customizable status pages
  • Distributed checks from multiple locations

What to know first

  • Requires self-hosted deployment
  • Raw pulse history lasts 24 hours
  • Uses GPL-3.0 licensing
  • Configuration and infrastructure are user-managed

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