18.3
Dotcom-Monitor is a website and infrastructure monitoring service from Dotcom-Monitor, a company founded in 1998 and headquartered in Excelsior, Minnesota.
Free planAndroidiOSWeb
Alternatives to Sentinel
27.8
Loadster Synthetic Monitoring runs scheduled scripted checks against websites, web apps, and APIs from outside your infrastructure.
Free planWebAPIExtension
37.8
UptimeRobot monitors websites, servers, and other services, with Android and iOS mobile apps.
Free planAndroidiOS
- 4
Tallwatch
Tallwatch monitors websites and APIs from multiple regions, opening an incident when at least two regions report the same failure during a check round.
Free planWebAPILinuxmacOS7.7From $14.99 a month - 5
Postman
Postman is a platform for designing, testing, distributing, documenting, and monitoring APIs.
Free planWebExtensionLinuxmacOS7.6From $9 a month - 6
Site24x7 API Monitoring
Site24x7 API Monitoring checks API interactions to identify issues that can affect reliability, performance and user experience.
Free planAndroidiOSWebAPI7.4From $109 a month - 7
Uptrends
Uptrends monitors websites, web applications, APIs, and servers for availability and performance.
AndroidiOSWebAPI7.4From $42 a month - 8
Watchlog
Watchlog brings infrastructure metrics, logs, distributed traces, real user monitoring, uptime checks, synthetic journeys, integrations, AI analysis,…
Free planWebAPILinuxSelf-hosted7.2From $299 a month - 9
APIContext
APIContext is a monitoring platform for checking service reliability and whether live API behavior follows its contract.
Free planWebLinuxmacOSWindows7.1From $29 a month - 10
7.1From €15 a month - 11
Runscope
Runscope monitors and tests APIs used by mobile and web applications, checking uptime, correctness, and performance from an API consumer’s perspective.
WebAPILinuxmacOS7.1From $79 a month - 12
Assertible
Assertible tests and monitors APIs, websites, and other HTTP services for uptime, availability, and correct behavior.
Free planWebAPI6.9From $25 a month - 13
Checkly
Checkly is a monitoring-as-code platform for developers tracking critical APIs and user interfaces.
Free planWebAPILinux6.9From $24 a month - 14
HostTracker
HostTracker monitors websites, servers, and APIs from outside a customer's network.
Free planWebAPI6.9From $49 a year - 15
ObserveOne API Monitoring
ObserveOne API Monitoring runs saved HTTP requests on demand or on a schedule and checks them against assertions for status codes, response times,…
Free planWebAPIExtensionSelf-hosted6.7From $6 a month - 16
PageLantern
PageLantern is a hosted service for monitoring websites, APIs, DNS records, certificates, domains, ports, and scheduled jobs.
Free planWebAPI6.7From $97 a month - 17
Signalog
Signalog brings uptime monitoring, on-call paging, incident handling, status pages, and postmortems into one incident-response workflow.
Free planWebAPI6.6From $19 a month - 18
Uptara
Uptara is an API reliability and developer infrastructure product from Vamix for developers, DevOps engineers, and SREs responsible for APIs and…
Free planWebAPI6.6From $15 a month - 19
CyberPing
CyberPing is an API monitoring and observability platform for tracking performance, latency, and uptime.
Free planWebAPISelf-hosted6.5From $49 a month - 20
Sematext Synthetics
Sematext Synthetics is a paid monitoring service for APIs, web URLs, websites and user journeys from locations around the globe.
WebAPILinuxSelf-hosted6.5$2 usage-based - 21
Status Inspector
Status Inspector monitors websites, APIs, and infrastructure for SaaS, DevOps, and technical teams.
Free planWebAPI6.5From €79 a month - 22
Sysmos
Sysmos combines distributed API health checks, Linux server observability, and a centralized monitoring dashboard.
Free planWebAPILinux6.5From $29 a month - 235.9Free plan
- 24
Apica Vanguard
Apica Vanguard runs synthetic checks that reproduce user and AI-agent workflows across websites, applications, APIs, and IoT systems.
WebSelf-hosted5.8 - 25
Uptime.com
Web5.8From $9 a month - 26
Cisco ThousandEyes
AndroidWebmacOSWindows5.4