
Ackee
Self-hosted web analytics, cookieless by default, open source.

OpenPanel is an open-source web and product analytics tool under AGPL-3.0, offered as a hosted service in the EU or for self-hosting without event limits. It counts visitors without cookies, and hosted plans are priced only by the number of events, with no limit on sites or team members.
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8.72 KB uncompressed · measured 17 Sep 2026
Billed by events · checked 17 Sep 2026
data-track attributes on HTML elements send custom events without extra JavaScript.screen_view events, so they count toward the monthly event volume together with custom events and outgoing link clicks.OpenPanel combines web analytics with product analytics: besides pageviews and traffic sources, it has funnels, retention, user profiles and revenue tracking, and it can record session replays. OpenPanel AB in Stockholm runs the hosted service, with data on Hetzner servers in Germany, and the code is available for self-hosting under AGPL-3.0.
Hosted plans are priced only by the number of events per month. The pricing page lists unlimited websites and apps, users, dashboards, charts and tracked profiles, which matters for teams that track several sites or apps in one account. SDKs cover websites, JavaScript frameworks, mobile apps and server-side languages.
For how it counts visitors without cookies, see what “cookieless” means here.
Creating a project in OpenPanel Cloud also creates a default client, and its client ID goes into the script snippet that you paste into the head section of every page. The snippet’s options switch on pageview, outgoing link and data attribute tracking, and SDKs exist for Next.js, React, Vue, React Native, Python and other platforms. The official WordPress plugin proxies requests through your site.
To self-host, clone the repository’s self-hosting branch and run the setup script, which can install Docker and Node.js and asks about your domain, database, email and AI settings. The guide asks for at least 2 GB of RAM, with 4 GB or more recommended, and the stack includes PostgreSQL, Redis and ClickHouse.
Project settings include an Imports tab with importers for Umami export files and for the Mixpanel and Amplitude APIs. OpenPanel’s Mixpanel guide also shows how to send exported history through the server-side SDK and asks you to contact support for large migrations.
The Google Analytics guide states that historical GA4 data cannot be imported. To move from OpenPanel Cloud to your own server, the vendor offers a database dump of your data on request.
As documented on the vendor’s own pages. “Partly” means the feature has limits or is only on some plans.
What the vendor documents. A platform that is not listed has no guide, plugin or package from the vendor.
No. The privacy policy says OpenPanel sets no tracking cookies and stores no IP addresses; devices are recognized by a daily-rotating hash of IP address, user agent and project. If you call identify with your own user ID, events are linked to that profile across devices and days.
No free cloud plan. OpenPanel Cloud starts with a 30-day free trial without a credit card, and the FAQ says the vendor wants serious users and has to fund maintenance and support. Self-hosting the open-source code is free and has no event limit.
Collection continues, but charts stop showing new data. According to OpenPanel’s limit notice, events received after the limit are kept and become visible once you upgrade or the next billing cycle starts.
In Germany. The privacy policy names Hetzner for storage, with backups on Cloudflare R2 in the EU, and says analytics event data does not leave the European Economic Area in standard operation. Account emails and optional AI features involve providers in the United States.
How each value is collected: methodology. Why tools get no overall score: our reasoning.
Same category, ordered by how many traits they share with OpenPanel: cookie handling, self-hosting and open code.
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