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Real user monitoring and session replay tools with a free plan in 2026

Measure performance and errors in real users' browsers and apps, and replay what they did. This list has 14 real user monitoring and session replay tools. Of these, 5 are open source, 14 have a free plan and 6 can be self-hosted. Checked by hand on 30 September 2026.

  1. 1

    Boomerang

    Open source JavaScript library, maintained by Akamai, that measures page load and user-perceived performance in real browsers and beacons the timings to a server you choose.

    Free Open source (BSD-3-Clause) Self-hosted Real user monitoring
  2. 2

    Cloudflare Web Analytics

    Privacy-first, cookie-free site analytics from Cloudflare that also reports real-user Core Web Vitals per page; works on sites not proxied by Cloudflare too.

    Free Real user monitoring
  3. 3

    Contentsquare

    Digital experience analytics platform with session replay, heatmaps, journey analysis and error and speed analysis; Hotjar is now part of it.

    Free plan Session replayReal user monitoring
  4. 4

    Embrace

    Mobile and web app monitoring built on OpenTelemetry: crashes, ANRs, network calls and full user session timelines for iOS, Android, React Native and Unity.

    Free plan Free: 1M sessions/year, 5 users ErrorsReal user monitoringMobile appOpenTelemetry
  5. 5

    Fullstory

    Digital experience analytics built on session replay: records web and mobile sessions, flags frustration signals and errors, and lets you search and segment users by behaviour.

    Free plan Free: 30,000 sessions/mo, 12-month retention Session replayReal user monitoring
  6. 6

    Grafana Faro

    Open source web SDK for frontend observability: captures page performance, Web Vitals, errors, logs and traces from browsers and sends them to Grafana Cloud or a self-run Alloy and Loki stack.

    Free plan Open source (Apache-2.0) Self-hosted Real user monitoringErrorsOpenTelemetry
  7. 7

    Microsoft Clarity

    Free session recordings and heatmaps from Microsoft, with rage-click and dead-click detection and JavaScript error markers on recordings. No traffic caps.

    Free Session replayReal user monitoring
  8. 8

    OpenReplay

    Open source session replay with developer tools attached: console logs, network requests and performance data alongside each recording, plus co-browsing. Self-host free or use a managed instance.

    Free plan Open source (AGPL-3.0) Self-hosted Session replayReal user monitoringErrors
  9. 9

    PostHog

    Open source product suite with session replay, product analytics, feature flags, error tracking and LLM analytics sharing one event store. Hosted with a monthly free allowance, or self-hosted.

    Free plan Free: 5K session recordings and 1M events per month Open source (MIT) Self-hosted Session replayReal user monitoringErrors
  10. 10

    Request Metrics

    Real user monitoring focused on Core Web Vitals and page speed for websites, with lab tests, SEO tracking and email alerts when performance slips.

    Free plan Free: 1 user, Core Web Vitals monitoring, email alerts Real user monitoring
  11. 11

    rrweb

    Open source library that records DOM changes in the browser and replays them as a session video; the recording engine inside many session replay products.

    Free Open source (MIT) Self-hosted Session replay
  12. 12

    Sematext

    Hosted infrastructure monitoring, log management, synthetic checks and real user monitoring, with a plan chosen per app.

    Free plan LogsInfrastructureSynthetic checksReal user monitoring
  13. 13

    Sentry

    Captures exceptions and crashes from web, mobile and backend SDKs, groups them into issues with stack traces and releases, and alerts owners. Adds tracing, replays and logs.

    Free plan Free: Developer: 5K errors/month, 1 user Self-hosted ErrorsAPMTracesReal user monitoring
  14. 14

    Smartlook

    Session recording, heatmaps and funnels for web and mobile apps, owned by Cisco. Being wound down, with its features moving into Splunk Observability Cloud.

    Free plan end-of-sale Session replayReal user monitoring

Side by side

Tool Pricing Free plan Open source Self-hosted Core Web VitalsSession replayJavaScript errorsMobile SDKsResource timingSegmentationAlertsPrivacy maskingJourneys or funnels
Boomerang Free Yes Yes Yes YesNoYesNoNoNoNoYesNo
Cloudflare Web Analytics Free Yes No No Yes----Yes-Yes-
Contentsquare Free plan Yes No No -YesYesYes-YesYesYesYes
Embrace Free plan 1M sessions/year, 5 users No No Yes-YesYesYesYesYesYesYes
Fullstory Free plan 30,000 sessions/mo, 12-month retention No No YesYesYesYesYesYesYesYesYes
Grafana Faro Free plan Yes Yes Yes YesYesYesNoNoNoNoYesNo
Microsoft Clarity Free Yes No No YesYesYesYes-Yes-YesYes
OpenReplay Free plan Yes Yes Yes -YesYesYesYesYesYesYesYes
PostHog Free plan 5K session recordings and 1M events per month Yes Yes YesYesYesYesYesYesYesYesYes
Request Metrics Free plan 1 user, Core Web Vitals monitoring, email alerts No No Yes-Yes-YesYesYesYesYes
rrweb Free Yes Yes Yes NoYesYesNoNoNoNoYesNo
Sematext Free plan Yes No No Yes---YesYesYes--
Sentry Free plan Developer: 5K errors/month, 1 user No Yes YesYesYesYesYesYesYesYes-
Smartlook Free plan Yes No No -YesYesYes-Yes-YesYes

Yes: confirmed in the tool's documentation. No: documented as not offered. -: not confirmed. Plans and prices change; check each tool's own site before you decide.

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