Side by side
Dotcom-Monitor vs ObserveOne API Monitoring
Both stand on api monitoring tools. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan AndroidAPIiPhone+4
Dotcom-Monitor offers target monitoring with multiple alert routes and plan limits that vary by tier. Compare the free plan's locations and retention with the subscription or Enterprise features you need.
Visit Dotcom-Monitor
Free plan APIExtensionSelf-hosted+1
ObserveOne combines configurable API checks with multiple alert destinations, automation interfaces, and self-hosting options. Check the Free plan's interval and saved-check limits, and confirm that cloud check targets are publicly reachable where required.
Visit ObserveOne API MonitoringThe facts
| Dotcom-Monitor | ObserveOne API Monitoring | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | Android, API, iPhone, Linux, Self-hosted, Web, Windows | API, Extension, Self-hosted, Web |
| Lowest paid plan | Performance Counters MetricsView: $13.33 a month | Starter: $6 a month |
| Plans published | 8 | 4 |
| Maker | Dotcom-Monitor | Not published |
| Website | dotcom-monitor.com | observeone.com |
| On api monitoring tools | #3 of 27 | #6 of 27 |
Dotcom-Monitor: what it does well
- Free plan includes up to 25 targets
- Checks can run as frequently as every five minutes on Free
- Lists SSL expiry, keyword, and server monitoring
- Alerts include email, SMS, webhooks, and Slack
- Available on web, desktop, and mobile platforms
What to know first
- Free plan has two monitoring locations
- Free plan retains data for seven days
- Subscription pricing varies by platform, target count, and frequency
ObserveOne API Monitoring: what it does well
- Assertions cover status, timing, JSON paths, headers, and body text.
- Checks can run from selected regions with scheduled retries.
- Write-only vault and encrypted storage protect monitoring secrets.
- Alerts include email, chat apps, SMS, and webhooks.
- GitHub and Netlify integrations support automated runs.
What to know first
- Free URL monitors have a two-hour minimum interval.
- Free plan allows one saved check.
- Cloud TCP, UDP, and database targets must be publicly reachable.
- Paid plans start at $6/mo billed annually.
Alternatives to Dotcom-Monitor Alternatives to ObserveOne API Monitoring The whole list