Countly is a product analytics and engagement platform that you host yourself. Where a web analytics tool counts page views, Countly is built around the product: events, sessions, users and devices across mobile apps, web and desktop clients, with crash reporting and push notifications in the same dashboard. The Community Edition is the open-source core, published as the countly-server repository and installable on your own server.

Key capabilities

• Real-time analytics — live dashboards of users, sessions, events and retention, with segmentation by any event or user property.
• Multi-platform SDKs — official SDKs for iOS, Android, React Native, Flutter, web, Windows and more, so one installation collects app and website data together.
• Crash reporting — native and JavaScript crash groups with stack traces and version breakdowns.
• Push notifications and messaging — send notifications and in-app messages to segments defined from your own analytics data.
• Funnels, retention and cohorts — see where users drop out of a flow and which groups come back.
• Plugin architecture — the platform is a Node.js application with MongoDB behind it, and features are plugins, which makes it extensible and lets you enable only what you need.

Community edition versus the commercial product

Countly the company sells an enterprise edition and hosted plans, and not everything shown on countly.com is in the Community Edition — the AI features, some advanced drill-down and journey automation areas are commercial. The Community Edition is licensed AGPL-3.0 with an additional Section 7 term: you may not remove Countly branding from the interface, and derivative products may not use Countly’s names or logos. That is a real restriction to read before you plan a white-labelled deployment, even though the source itself is free software.

Alternatives in the directory

• PostHog — product analytics with session replay and feature flags.
• Umami — far simpler, privacy-first web analytics.
• Matomo — mature web analytics with a strong privacy and compliance story.