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Analytics and monitoring

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This category covers software that watches a running site. Web analytics tools collect page views and events through a script or server logs and report on traffic. Error trackers take reports from an SDK inside the application, and uptime checkers poll the site from outside and alert someone when it stops answering. The installable ones keep that data on the operator’s own server. A record carries this category when measuring or watching a site is its purpose. Many also offer a hosted version beside the self-hosted one. Matomo, Sentry and Uptime Kuma are examples.

20 projects are analytics and monitoring, listed alphabetically. Written in 7 languages, most of them open source. Counts only projects with momentum; the full list has the rest.

A

  • Apache SkyWalking

    Application performance monitoring system for distributed systems, microservices and container-based architectures.

B

  • BugSnag

    Error monitoring and performance monitoring service for mobile, web, desktop and server applications, offered as a hosted platform and as an on-premises installation.

C

  • ClickHouse

    Column-oriented SQL database management system for analytical queries, available as open-source server software and as a cloud service.

  • Countly Lite

    Self-hosted analytics and engagement server that collects data from web, mobile and desktop applications and shows it in dashboards.

E

  • Exceptionless

    Error and log reporting service with a self-hostable server, a web dashboard and client libraries for .NET and JavaScript.

G

  • GlitchTip

    Open-source error tracking platform that works with Sentry client SDKs, self-hosted or hosted by GlitchTip.

  • Grafana

    Open source application for querying, visualizing, alerting on and exploring metrics, logs and traces.

  • Grafana Loki

    Horizontally scalable log aggregation system that indexes log labels rather than the text of log lines.

  • GrowthBook

    Open-core feature flagging, experimentation and product analytics platform, available self-hosted or as a cloud service, with SDKs for application code.

I

  • InsightFlare

    Privacy-friendly web analytics tool that a site owner deploys to their own Cloudflare account and embeds with a small script.

J

  • Jaeger

    Open-source distributed tracing platform that collects, stores and shows traces from requests that cross services.

L

  • Langfuse

    Open-source platform for tracing, evaluating and monitoring LLM applications, sent from application code through SDKs and OpenTelemetry.

O

  • Open Web Analytics

    Open source web analytics framework that records visits to websites and applications and reports on them, with a JavaScript tracker and a PHP server.

P

  • PoeticMetric

    Open source website analytics tool that uses no cookies, offered as a managed service on poeticmetric.com or self-hosted with Docker Compose.

  • PostHog

    Product analytics platform with session replay, feature flags, experiments, error tracking and surveys, self-hosted from its code or run as PostHog Cloud.

S

  • Sentry

    Application monitoring and error tracking platform, self-hosted or offered as Sentry SaaS.

  • SigNoz

    Open-source observability platform built on OpenTelemetry that covers logs, metrics, traces, alerts and dashboards.

T

  • Traks

    Self-hosted web analytics that runs on Cloudflare Workers, Durable Objects, D1 and R2 in the site owner's own Cloudflare account.

U

  • Umami

    Open-source web and product analytics platform, self-hosted or offered as Umami Cloud.

V

  • VictoriaMetrics

    Time series database and monitoring solution that stores metrics pushed by applications and agents, with a Prometheus-compatible query API.

What is the best analytics and monitoring?

We can't tell from here. What suits an editor-heavy marketing site can be wrong for a static documentation site. The list is alphabetical and nobody paid for a place on it.