Best Open-Source Web Analytics Tools 2026: 6 Options Compared

Open-source analytics is chosen for three reasons: you own the data, you avoid cookie banners, or you want to stop paying per pageview. Each tool here can be self-hosted free of license charge, but not free of effort. You run a server, a database, updates and backups, and a busy site makes that real work. Matomo is the closest replacement for Google Analytics, with a wide report set, though heatmaps and session recording need paid bundles. Plausible and Umami keep to a short, simple dashboard and are the easiest to read. PostHog and OpenReplay go beyond pageviews into product analytics and session replay, which suits apps more than blogs. GrowthBook is about experiments and feature flags rather than traffic reports. A key point: several of these are open core, meaning an enterprise folder sits under a separate license, so check which features you need before assuming they are in the free edition. Hosted plans exist for most, and they are often the practical choice for small sites, since a cheap managed plan can cost less than your time. Decide whether you need traffic reports, product behavior, or experiments, because that narrows the field quickly.

Matomo

GPL-3.0 and the broadest Google Analytics replacement. On-premise Community is free with unlimited users and hits; heatmaps and session recording need a paid bundle.

Price: Free (On-premise Community edition is free with unlimited users and hits; heatmaps and session recording need a paid on-premise bundle) (Matomo pricing, checked 2026-10-22).

Platforms and license: Web browser, Self-hosted (PHP). GPL-3.0-or-later (open source) (license source).

Project activity: 22k GitHub stars · latest release 5.14.2 (Oct 22, 2026) · last commit Oct 27, 2026

Best for: Teams replacing Google Analytics.

Umami

MIT with a simple dashboard. Self-hosting is free; the hosted Hobby plan allows 100K events a month and one website, with Pro at $20 a month.

Price: Free (Hobby: up to 100K events per month, 1 website, 6 months data retention; self-hosting is free); paid from $20 per month, billed monthly (Pro, 1M events per month) (Umami pricing, checked 2026-10-22).

Platforms and license: Web browser, Self-hosted. MIT (open source) (license source).

Project activity: 39.7k GitHub stars · latest release v3.4.1 (Oct 23, 2026) · last commit Oct 27, 2026

Best for: Small sites that want a clean view.

Plausible Analytics

AGPL-3.0 Community Edition you can self-host. The hosted Starter plan is $9 a month for up to 10k pageviews, with a 30-day trial.

Price: Free (Community Edition is free to self-host; the hosted service has a 30-day trial with no card); paid from $9 per month, Starter, up to 10k pageviews (billing term not stated on the page) (Plausible Analytics pricing, checked 2026-10-24).

Platforms and license: Web browser, Self-hosted. AGPL-3.0 (Community Edition) (open source) (license source).

Project activity: 29.7k GitHub stars · latest release v3.2.1 (May 15, 2026) · last commit Oct 27, 2026

Best for: Privacy-minded sites with light reporting.

PostHog

MIT core with an ee directory under a separate license. Cloud free tier includes 1M events and 5k recordings a month; self-hosted hobby deploys suit about 100k events.

Price: Free (Cloud free tier includes 5k recordings and 1M events a month; self-hosted hobby deploy suits about 100k events a month) (PostHog pricing, checked 2026-10-22).

Platforms and license: Web browser, Linux (self-hosted, Docker). MIT (ee/ directory under a separate licence) (open source) (license source).

Project activity: 40.5k GitHub stars · latest release desktop-v0.61.851 (Oct 27, 2026) · last commit Oct 28, 2026

Best for: Product analytics for apps.

OpenReplay

AGPL-3.0 session replay with an enterprise folder under a commercial license. The self-hosted edition is free; a dedicated managed instance is $199 a month.

Price: Free (Open-source self-hosted edition is free; you run it yourself); paid from $199 per month (Dedicated managed instance) (OpenReplay pricing, checked 2026-10-22).

Platforms and license: Web browser, Self-hosted. AGPL-3.0 for most code; ee/ directory under a commercial licence (open source) (license source).

Project activity: 13.1k GitHub stars · latest release v1.28.0 (Sep 25, 2026) · last commit Oct 27, 2026

Best for: Watching real user sessions.

Worth knowing: Serverless usage-based plan has no listed rates.

GrowthBook

MIT with enterprise directories separately licensed, built for experiments and feature flags. Self-hosted open source is free for one project; Cloud Pro is $40 a seat.

Price: Free (Cloud Starter: up to 3 users, 1 project, unlimited feature flags, experiments and traffic; self-hosted Open Source plan is free for 1 project); paid from $40 per seat/month (Cloud Pro, up to 30 users) (GrowthBook pricing, checked 2026-10-23).

Platforms and license: Web browser, Self-hosted. MIT Expat, with enterprise directories under a separate licence (open source) (license source).

Project activity: 8.5k GitHub stars · latest release v5.1.0 (Sep 22, 2026) · last commit Oct 27, 2026

Best for: A/B tests and feature flags.

Worth knowing: Enterprise plans are custom priced.

Which one to pick

• You want to drop Google Analytics on a content site: Matomo
• You want the lightest dashboard: Umami
• You run a SaaS and need funnels: PostHog
• You need to see where users get stuck: OpenReplay
• You run experiments on features: GrowthBook