Front end · built on OpenTelemetry Browser SDK in beta

What real people experience - and whether your URLs are up when nobody is looking.

Core Web Vitals and JavaScript errors from real browsers, session timelines, and synthetic checks that watch availability, latency and TLS expiry on a schedule.

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In the console:BrowserSession replayUptime

Owlpane front-end overview: page loads, JavaScript errors, navigation timing, Core Web Vitals gauges and top pages.

What you get

Real user monitoring & uptime, in detail

Browser

Core Web Vitals, navigation timing (DNS, TTFB, download, transfer size), pages, JavaScript errors and fetch/XHR from real users. Follow any call into its backend trace.

Session replay

A per-session timeline of what happened, with optional DOM replay when you enable it — opt-in, not on by default.

Uptime checks

Synthetic checks request your URLs on a schedule, measure availability and latency, watch TLS certificate expiry, and alert when something stays down.

Alerts on checks

Check results feed the same alert channels as every other rule, including certificate expiry.

How it works

From zero to data in three steps

Add

Install @owlpane/browser (zero dependencies) in your front end.

Measure

Vitals and errors are sent as OpenTelemetry signals alongside your backend traces.

Alert

Uptime checks page you through the same channels as any other alert.

main.ts

import { init } from "@owlpane/browser";

init({
  endpoint: "https://ingest.example.com",
  projectKey: "owl_ing_...",
  serviceName: "storefront-web",
  release: "1.4.2",
});

How it compares

Honest about where we are today

Comparable to

DatadogAPM / RUM / LogsPartial

Dash0Web / SyntheticPartial

SentryErrors & performancePartial

ChecklyBrowser & API syntheticsPartial

Where Owlpane is narrower

Session replay and mobile crash reporting are thinner than Sentry or Datadog, and replay is in beta.
Uptime checks cover HTTP, TCP, multi-step HTTP and single-page browser checks; scripted multi-page browser journeys are narrower than Checkly.

Built ships todayPartial covers the core, narrower than the vendorBring your own integrate an existing toolNot offered deliberately out of scopeIn development on the roadmap, not shipped

Comparisons reflect publicly available information as of September 2026 and our own product today, and may change. Datadog, New Relic, Grafana, Dash0, Better Stack, Amazon CloudWatch, AWS, Sentry, Dynatrace, Kubeshark, Checkly, PagerDuty, SigNoz, Kubernetes, OpenTelemetry, Prometheus and other names are trademarks of their respective owners; Owlpane is not affiliated with or endorsed by them.

Everything shares one pane

Try RUM & uptime beside what you run today.

Standard OpenTelemetry in, so you can send a copy and compare. Nothing proprietary to migrate away from later.

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