Best API Monitoring Tools in 2026
Updated
Keeping tabs on API behavior means looking beyond whether an endpoint responds: the frequency and location of checks, and what happens when they fail, can all matter. Compare check frequency, response assertions, and multi-region checks alongside monitor limits and private locations. Incident workflows, free-plan availability, and paid-from pricing round out the comparison. Site24x7 API Monitoring, APIContext, and Dotcom-Monitor are among the entries, with Postman and Tallwatch also shown. Use the listed criteria to consider where monitoring should run, what checks matter to you, and how a team can handle an incident.
20 of 22 with known pricing have a free tier;0 apps show full bars: free, open, on most devices and documented.
| # | App | Signal | Free tier | Open code | Devices | From | Score |
|---|---|---|---|---|---|---|---|
| 1 | Site24x7 API MonitoringWeb · Windows · Mac · Linux · Android · iPhone · API | Three bars | 6 of 6 | $109/mo | 6.8 | ||
| 2 | APIContextWeb · Windows · Mac · Linux | Three bars | 4 of 6 | $29/mo | 6.6 | ||
| 3 | Dotcom-MonitorWeb · Windows · Linux · Android · iPhone | Three bars | 5 of 6 | $13.33/mo | 6.6 | ||
| 4 | PostmanWeb · Windows · Mac · Linux · Extension | Three bars | 4 of 6 | $9/mo | 6.6 | ||
| 5 | TallwatchWeb · Windows · Mac · Linux · API | Three bars | 4 of 6 | $11.99/mo | 6.6 | ||
| 6 | UptimeRobotAndroid · iPhone | Two bars | 2 of 6 | $9/mo | 6.5 | ||
| 7 | WatchlogWeb · Windows · Linux · Self-hosted · API | Three bars | 3 of 6 | $4.99/mo | 6.5 | ||
| 8 | ChecklyWeb · Linux · API | Two bars | 2 of 6 | $24/mo | 6.4 | ||
| 9 | HostTrackerWeb · API | Two bars | 1 of 6 | $4.08/mo | 6.4 | ||
| 10 | Loadster Synthetic MonitoringWeb · Self-hosted · API · Extension | Two bars | 1 of 6 | $77/mo | 6.4 | ||
| 11 | ObserveOne API MonitoringWeb · Self-hosted · API · Extension | Two bars | 1 of 6 | $6/mo | 6.4 | ||
| 12 | SentinelWeb · Mac · API · Extension | Two bars | 2 of 6 | $14/mo | 6.4 | ||
| 13 | SignalogWeb · API | Two bars | 1 of 6 | $19/mo | 6.4 | ||
| 14 | SysmosWeb · Linux · API | Two bars | 2 of 6 | $29/mo | 6.4 | ||
| 15 | UptaraWeb · API | Two bars | 1 of 6 | $15/mo | 6.4 | ||
| 16 | AssertibleWeb · API | Two bars | 1 of 6 | $25/mo | 6.3 | ||
| 17 | CyberPingWeb · Self-hosted · API | Two bars | 1 of 6 | $49/mo | 6.3 | ||
| 18 | PageLanternWeb · API | Two bars | 1 of 6 | $97/mo | 6.3 | ||
| 19 | pingdanWeb | Two bars | 1 of 6 | Free | 6.3 | ||
| 20 | Status InspectorWeb · API | Two bars | 1 of 6 | €79/mo | 6.3 | ||
| 21 | RunscopeWeb · Windows · Mac · Linux · Self-hosted · API | Two bars | 4 of 6 | $79/mo | 5.7 | ||
| 22 | Apica VanguardWeb · Self-hosted | One bar | 1 of 6 | 5.4 | |||
| 23 | Uptime.comWeb | One bar | 1 of 6 | $9/mo | 5.3 | ||
| 24 | UptrendsWeb · Windows · Linux · Android · iPhone · API | Two bars | No | 5 of 6 | $42/mo | 5.3 | |
| 25 | Oh DearWeb | One bar | No | 1 of 6 | €15/mo | 5.1 |
Compare all 25 in a table
| # | App | Score | Free plan | From | Free plan | Paid from | Check frequency | Response assertions |
|---|---|---|---|---|---|---|---|---|
| 1 | Site24x7 API Monitoring | 6.8 | Free plan | $109/mo | Yes | 9 /mo | 1 min | Yes |
| 2 | APIContext | 6.6 | Free plan | $29/mo | Yes | 29 /mo | 5 min | Yes |
| 3 | Dotcom-Monitor | 6.6 | Free plan | $13.33/mo | Yes | 13.33 /mo | ||
| 4 | Postman | 6.6 | Free plan | $9/mo | Yes | 9 /mo | ||
| 5 | Tallwatch | 6.6 | Free plan | $11.99/mo | Yes | 11.99 /mo | ||
| 6 | UptimeRobot | 6.5 | Free plan | $9/mo | Yes | 12 /mo | ||
| 7 | Watchlog | 6.5 | Free plan | $4.99/mo | Yes | 4.99 /mo | 1 min | Yes |
| 8 | Checkly | 6.4 | Free plan | $24/mo | Yes | 24 /mo | ||
| 9 | HostTracker | 6.4 | Free plan | $4.08/mo | Yes | 5 /mo | ||
| 10 | Loadster Synthetic Monitoring | 6.4 | Free plan | $77/mo | No | 29 /mo | 1 min | Yes |
| 11 | ObserveOne API Monitoring | 6.4 | Free plan | $6/mo | Yes | 6 /mo | 1 min | Yes |
| 12 | Sentinel | 6.4 | Free plan | $14/mo | Yes | 12 /mo | Yes | |
| 13 | Signalog | 6.4 | Free plan | $19/mo | Yes | 19 /mo | Yes | |
| 14 | Sysmos | 6.4 | Free plan | $29/mo | Yes | 29 /mo | Yes | |
| 15 | Uptara | 6.4 | Free plan | $15/mo | Yes | 15 /mo | Yes | |
| 16 | Assertible | 6.3 | Free plan | $25/mo | Yes | 25 /mo | ||
| 17 | CyberPing | 6.3 | Free plan | $49/mo | Yes | 49 /mo | Yes | |
| 18 | PageLantern | 6.3 | Free plan | $97/mo | Yes | 7 /mo | ||
| 19 | pingdan | 6.3 | Free plan | Free | Yes | Yes | ||
| 20 | Status Inspector | 6.3 | Free plan | €79/mo | Yes | 1 min | Yes | |
| 21 | Runscope | 5.7 | $79/mo | 79 /mo | 1 min | Yes | ||
| 22 | Apica Vanguard | 5.4 | 5 min | Yes | ||||
| 23 | Uptime.com | 5.3 | $9/mo | 9 /mo | ||||
| 24 | Uptrends | 5.3 | No | $42/mo | No | 42 /mo | ||
| 25 | Oh Dear | 5.1 | No | €15/mo | No |
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Numbered spots on this list can be sponsored, and a sponsored row is labelled as paid.