Side by side
MonSpark vs OnlineOrNot
Both stand on synthetic monitoring. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
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 Free plan APILinuxMac+1
Visit OnlineOrNot The facts
| MonSpark | OnlineOrNot | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | No |
| Runs on | API, Extension, Web | API, Linux, Mac, Web |
| Lowest paid plan | Not published | Pro: $15 a month |
| Plans published | None | 3 |
| Maker | MonSpark | OnlineOrNot |
| Website | monspark.com | onlineornot.com |
| On synthetic monitoring | #11 of 43 | #7 of 43 |
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.
OnlineOrNot: what it does well
Alternatives to MonSpark Alternatives to OnlineOrNot The whole list

