Best Open-Source Product Analytics Tools

In today's data-driven world, product analytics tools play a crucial role in understanding user behaviour, optimizing user experiences, and making informed decisions for product development and growth. Open-source product analytics tools offer the advantage of transparency, customization, and community-driven development. In this blog post, we will compare and evaluate some of the best open-source product analytics tools available: PostHog, Matomo, Countly, OpenReplay, Plausible Analytics, Unami, and GrowthBook.


PostHog - best open source analytics tools
  • GitHub Stars: 11.2k
  • Language(s): TypeScript (53%) and Python (42%)
  • Alternative to: Mixpanel, Amplitude, Hotjar, FullStory, LaunchDarkly
  • PostHog on GitHub

PostHog is an open-source product analytics platform that helps you understand user behavior and improve your product. It provides features like event tracking, user recording, user cohorts, funnels, and more. 

Who is this product for: PostHog is ideal for product teams and developers who want to track user interactions, identify bottlenecks, and iterate on their product based on real user feedback.

Who is PostHog for?

PostHog is positioned as a product analytics tool for engineers - compared to its competitors, which target product teams. It is also built with the intent to eliminate the need to have multiple tools such as (e.g. Mixpanel, LaunchDarkly, Hotjar) .


  • All-in-one set of analytics tools
  • No need for  SQL
  • Both self-hosting and cloud-hosting options.
  • Feature flags
  • Multivariate experimentation
  • Session recording
  • Pipelines for events that connect to data warehouses
  • Built on the ClickHouse OLAP database

Open source license and monetization

PostHog Open Source is available for free and is distributed under the MIT license. The open source version includes the core product analytics, feature flagging, and session recording features, but is limited to one project. There's also a FOSS edition that removes all proprietary code.

By subscribing to PostHog Cloud, the project limit is removed and a lot of paid features are added, such as the ability to experiment, correlation analysis, group analytics for keeping track of organizations, and advanced cohorts. PostHog Cloud is free up to 1 million events per month.


Matomo - open source analytics tools
  • GitHub Stars: 17.4k
  • Languages: PHP (58%), HTML (18%), JavaScript (18%)
  • Alternative to: Google Analytics
  • Matomo on GitHub

Matomo, formerly known as Piwik, is a leading open-source web analytics platform. It provides comprehensive insights into user behavior, visitor segmentation, conversion tracking, and more..

Who is Matomo for?

Matomo caters to individuals, businesses, and organizations seeking complete control over their analytics data. It is particularly useful for privacy-conscious users who want to comply with data protection regulations. The European Union uses an enterprise-grade version of Matomo on all of its websites, so you know it is good for small and large businesses alike.


  • Google Analytics data importer
  • Easy to set up on WordPress and WooCommerce
  • Marketing metrics and attribution
  • Integrations with popular off-the-shelf CMS
  • Built-in GDPR and tag managers

Open source license and monetization

Matomo is licensed under the GNU General Public License v3. It offers a free self-hosted version, allowing you to manage your analytics infrastructure. Matomo also offers paid plans for additional features, cloud hosting, and support.


Countly - open source analytics tools
  • GitHub Stars: 5k
  • Languages: JavaScript (82%), HTML (9.4%)
  • Alternative to: Mixpanel, Amplitude, LogRocket
  • Countly on GitHub

Countly is an open-source product analytics platform that provides real-time insights into user journeys, engagement, and conversions. It offers a comprehensive set of features, including push notifications, crash reporting, and attribution analytics. Who is this product for: 

Who is Countly for?

Countly is suitable for organizations looking for a unified analytics solution that covers mobile, web, and desktop applications. It caters to product managers, developers, and marketers.


  • Wide range of analysis tools
  • Focus on mobile and desktop app development
  • Crash analytics to diagnose bugs
  • Run surveys to get qualitative insights

Open source license and monetization

Countly is dual-licensed under the GNU Affero General Public License v3 and a commercial license. The open-source version allows self-hosting, while Countly offers paid plans with additional features, cloud hosting, and support.


openreplay - open source analytics tools
  • GitHub Stars: 7.1k
  • Languages: Python (25%), TypeScript (24%), JavaScript (24%)
  • Alternative to: LogRocket, Hotjar
  • OpenReplay on GitHub

OpenReplay is an open-source session replay and frontend monitoring tool that helps developers understand and reproduce user sessions. It captures and replays user interactions, network requests, and JavaScript errors.

Who is OpenReplay for?

OpenReplay is primarily designed for developers, QA testers, and support teams who want to gain insights into user sessions, debug issues, and improve user experience.


  • Privacy-friendly
  • Error tracking and bug fixing features
  • Performance monitoring

Open source license and monetization

OpenReplay is available under the ELv2 license. An Enterprise version adds additional reporting features and dedicated support, but there's no public pricing. There's also a cloud version with pricing based on sessions.

Plausible Analytics

Plausible Analytics - open source analytics tools
  • GitHub Stars: 14.2k
  • Languages: Elixir (66%), HTML (18%), JavaScript (15%)
  • Alternative to: Google Analytics
  • Plausible on Github

Plausible Analytics Plausible Analytics is a lightweight and privacy-focused open-source web analytics tool. It offers simple and clean analytics without collecting personal data or using cookies.

Who is Plausible Analytics for?

Plausible Analytics caters to website owners, bloggers, and small businesses who prioritize privacy and want a simple yet effective analytics solution without compromising user data.


  • Easy to use and focused on essential web metrics
  • Lightweight integration script won’t impact page performance
  • No cookies required, GDPR compliant out of the box

Open source license and monetization

Plausible Analytics is released under the AGPLv3 license. The project offers both self-hosted and cloud-hosted options. Paid plans for additional features and support sustain the development of the project.


umami analytics
  • GitHub Stars: 14.9k
  • Languages: 91% JavaScript
  • Alternative to: Google Analytics
  • Umami on GitHub

Umami Unami is an open-source, real-time web analytics solution built with Node.js and MongoDB. It provides detailed insights into user behavior, engagement, and performance.

Who is Umami for?

Unami is suitable for developers and small to medium-sized businesses looking for a self-hosted, real-time analytics platform with customization options..


  • Fast and lightweight, no impact on website performance
  • Doesn't collect any personally identifiable information
  • Easy to self-host and configure

Open source license and monetization

Unami is released under the MIT License, allowing free and open use. The project is maintained through community contributions and support.


GrowthBook - best open source analytics tools

GrowthBook is an open-source A/B testing platform and experimentation framework. It enables product teams to run experiments, track metrics, and make data-driven decisions for growth.

Who is GrowthBook for?

GrowthBook targets product managers, growth marketers, and developers who want to run A/B tests, track key metrics, and optimize user experiences to drive growth.


  • Multivariate feature flags
  • Support for Mixpanel JQL querying
  • A/B testing visual editor
  • Can be self-hosted
  • No performance impact

Open source license and monetization

GrowthBook is released under the MIT License, allowing free use and modification. The project offers a self-hosted option, and paid plans provide additional features and support. The cloud version is free for up to three users, and  $20 per user per month for more than three users.

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