Product analytics & session replay
Seeing how people use your app or website, step by step.
Open alternatives4
Open-source apps that replace Mixpanel, Amplitude and more
PostHog is a platform that collects and analyzes how people use a website or app, including analytics, session replays, error tracking, feature flags and surveys. It is aimed at product, engineering and analytics teams, and you can use the hosted cloud or run it on your own server.

OpenReplay is a platform you run on your own servers that records and replays how people use your website or app, with product analytics and live help sessions. It is aimed at teams, especially in regulated industries, that cannot send user data to outside companies.

Highlight is a monitoring platform that records user sessions, tracks errors and collects logs so developers can find out why bugs happen. It is aimed at software developers who run web apps.

Trench is a system for recording and querying events that happen in apps and websites, such as button clicks or sign-ups. It is aimed at teams that want to run their own analytics pipeline and keep their data.
What's missing
What people still miss here, and wish existed. Upvote what matters to you.
Before you build
Planning something for product analytics & session replay? See what exists first, so you can reuse parts or explain what's different. Paste this into any AI assistant:
Fix the list itself
A project or closed app missing from this list, or a mistake on it? These open a short form on GitHub, and a mod reviews it. To say what a project can't do, use What's missing.
About this page
Replaces fully means it does the main job of these apps; Replaces partly means it covers some of it.
Licenses: every project here uses an open-source license (what each one means). Open core means some parts are paid or under another license.
GitHub stars are shown for reference. They measure popularity, not whether it replaces anything.
Verified means r/TrueOpenSource mods checked it: open-source license, maintained, and it really does the job.
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