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   * [Pingmeter.com](https://pingmeter.com/) - 5 uptime monitors with 10 minutes interval. monitor SSH, HTTP, HTTPS, and any custom TCP ports.
   * [appdynamics.com](https://www.appdynamics.com/) — Free for 24 hours metrics, application performance management agents limited to one Java, one .NET, one PHP and one Node.js
   * [appneta.com](https://www.appneta.com/) — Free with 1-hour data retention
+  * [appspector.com](https://appspector.com/) - Mission control, for remote iOS/Android/Flutter debugging. Free for small traffic usage (64MB of logs).
   * [assertible.com](https://assertible.com) — Automated API testing and monitoring. Free plans for teams and individuals.
   * [blackfire.io](https://blackfire.io/) — Blackfire is the SaaS-delivered Application Performance Solution. Free Hacker plan (PHP only)
   * [checklyhq.com](https://checklyhq.com) - Open source E2E / Synthetic monitoring and deep API monitoring for developers. Free plan with 5 users and 50k+ check runs.