Best Free & Open Source Alternatives to Amplitude

PostHog is an open-source product analytics platform designed to help teams understand how users interact with their web and mobile apps. It offers features like event tracking, funnels, session replays, feature flags, A/B testing, and more—all in one unified platform.

Unlike traditional analytics tools, PostHog can be self-hosted, giving teams full control over their data and compliance with privacy regulations. It’s built for developers, with support for custom event tracking, autocapture, and deep integration into modern dev workflows.

PostHog helps you build better products by giving you complete visibility into user behavior without sending data to third parties.

Matomo (formerly Piwik) is the leading open-source web analytics platform, offering a comprehensive privacy-respecting alternative to both Google Analytics and Google Search Console. With over 21,000 GitHub stars, it is trusted by over 1 million websites and used by governments, universities, and organizations worldwide.

Beyond standard web analytics, Matomo includes a Search Engine Keywords Performance plugin that imports search query data from Google Search Console, Bing Webmaster Tools, and other sources directly into your analytics dashboard. This allows you to see keyword rankings, impressions, clicks, and click-through rates alongside your full visitor analytics — without needing to use Google Search Console itself.

Licensed under GPL-3.0, Matomo is fully self-hostable on PHP/MySQL servers and is also available as a managed cloud service at matomo.org. It provides GDPR-compliant analytics with no data sampling, 100% data ownership, and no data sharing with advertising networks. For organizations exiting the Google ecosystem, Matomo is the all-in-one analytics solution that covers both web analytics and search performance reporting.

Open Web Analytics (OWA) is an open-source alternative to commercial analytics tools like Google Analytics. It gives you complete control over the data you collect about your website or application usage, ensuring privacy compliance and data ownership.

OWA provides comprehensive tracking capabilities including page views, click tracking, heatmaps, and e-commerce analytics. It can be easily integrated with popular content management systems like WordPress and MediaWiki, or used as a standalone tracking solution for any website.

With OWA, your analytics data stays on your own servers, eliminating concerns about third-party data sharing and ensuring compliance with privacy regulations like GDPR. The platform is built on PHP and MySQL, making it easy to deploy on most web hosting environments.

OpenPanel is an open-source product and web analytics platform built as a privacy-friendly alternative to tools like Mixpanel and Amplitude. It allows you to track user interactions, measure key metrics, and analyze behavior without relying on invasive tracking methods or third-party cookies.

With OpenPanel, you can set up event tracking to record specific actions users take, then explore the data through features like funnels, retention charts, and real-time dashboards. It also supports user profiles, so you can see individual user journeys, segment your audience, and understand how engagement changes over time.

Because it’s open-source, you can self-host OpenPanel on your own infrastructure, giving you full control over your analytics data and ensuring compliance with privacy regulations like GDPR. The interface is designed to be clean and intuitive, making it easy to start collecting insights quickly, while still offering flexibility for advanced custom event tracking and integration into existing systems.

It’s particularly appealing for developers and teams who want a Mixpanel-like analytics experience but prefer full data ownership, transparency, and no vendor lock-in.

Swetrix is a privacy-first, cookie-less web analytics platform built as an open-source alternative to Google Analytics and other commercial tracking services. It provides comprehensive website analytics including visitor tracking, page views, referral sources, and custom events — all without relying on cookies or compromising user privacy.

In addition to standard web analytics, Swetrix offers website speed monitoring and error tracking capabilities, making it an all-in-one observability solution for website owners. The platform is built on a modern tech stack using NestJS and React, with ClickHouse powering high-performance analytics queries and Redis handling caching.

Swetrix can be self-hosted via Docker for complete data sovereignty, or used as a managed cloud service at swetrix.com. Licensed under AGPL-3.0, it ensures full transparency and gives organizations full control over their analytics data without vendor lock-in.

Databuddy is an open-source, privacy-focused analytics solution designed for developers who care about both user privacy and insightful data. Built using modern web technologies like TypeScript, Next.js, React, Turborepo, Bun, and Tailwind CSS, it provides a robust, flexible analytics suite—with no compromise on data protection.
👉 GitHub Repository

🚀 Key Features

• Real-time analytics dashboard – Track user activity as it happens.
• User behavior tracking – Monitor pathways, conversions, and funnels.
• Goal & conversion tracking – Set custom goals and measure success.
• Custom event tracking, funnel analysis, cohort analysis (soon).
• A/B testing, advanced visualizations, exports, real-time updates, multi-tenant support (on the roadmap).
• Security & compliance – GDPR-ready, data encryption, secure auth, and API access.

🏗️ Architecture & Tech Stack

• Built with TypeScript, Next.js, React, Turborepo, Bun, Tailwind CSS.
• Open-source under AGPL-3.0 – use, modify, and self-host freely.
• Supports PostgreSQL, Redis, and optional ClickHouse via Docker.
• Local dev tools baked in: bun run dev, db:push, sdk:build, seeding sample data.
• Strong development workflow: staging, testing, linting, formatting, type checking, and DB migrations.

🌱 Community & Development

• ⭐ 457 GitHub stars and 62 forks (as of Sept 2, 2025).
• Built and maintained by Iza Nassar.
• Featured in Vercel’s Community Session: Why I Built Databuddy (Aug 21, 2025).
• Actively growing with contributions and feedback from the community.

Vemetric is an analytics platform that combines web analytics and product analytics in a single tool, helping teams understand how users discover and interact with their digital products. Web analytics capabilities cover page views, traffic sources, and geographic data, while the product analytics layer tracks complete user journeys, session activity, conversion funnels, and event streams in chronological order.

Key features include interactive activity heatmaps, advanced user and event filtering, GDPR-compliant tracking without cookies (with EU-hosted servers), and a real-time event stream for monitoring live activity. Upcoming features include behavioural user segments, campaign tracking, and automation triggers based on custom events.

Vemetric is suited to SaaS companies, startups, and marketing teams that need both traffic measurement and deeper product adoption insights in one place, without the data privacy concerns of ad-tech-based analytics platforms.