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 | [AppSignal](https://appsignal.com) | [@AppSignal](https://twitter.com/AppSignal) | $49/mo - $259/mo | Better monitoring for your Rails applications. Get detailled statistics on your site's performance with mean and 90th percentile measurements. |
 | [Instrumental](https://instrumentalapp.com) | [@instrumental](https://twitter.com/instrumental) | $150/mo - $750/mo | Monitor Your App in Realtime. Instrumental’s made to monitor metrics at a ridiculously high scale. At rates of 500,000 metrics per second and higher, it doesn’t even break a sweat |
 | [Atatus](https://www.atatus.com) | [@atatusapp](https://twitter.com/atatusapp) | $12/mo - $159/mo | Simple JavaScript Error Tracking. Atatus is a simple error tracking and uptime monitoring system. Add two lines of code and get alerted on any errors that occurs in your application in realtime. |
+| [SigNoz](https://signoz.io/) | [@SignozHQ](https://x.com/SignozHQ) | Free (Self-Host) - $199/mo (Cloud) | OpenTelemetry native observability tool that offers APM, logs, traces, metrics, exceptions, and alerts in one single pane of glass. Available as both open-source and cloud offerings.|
 
 ## Load Testing