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Open source alternatives to June[005]

June turns product usage events into ready-made reports on activation, retention and account health for B2B SaaS. Below are 5 self-hostable open source alternatives, ranked by GitHub popularity.

// EDITOR'S TAKE

PostHog is the closest thing to a drop-in replacement and then some, since it covers funnels, retention and cohorts plus session replay and flags, at the cost of a much heavier self-hosted footprint. Aptabase is the sane choice if you only need privacy-friendly usage counts from a desktop or mobile app, and OpenReplay solves a different problem entirely, replay rather than metrics.

// FREQUENTLY ASKED

What is the best open source June alternative?

PostHog is the most popular open source June alternative by GitHub stars (34,351 stars). The other 4 options are ranked above.

Are these June alternatives self-hostable?

Yes — every project listed here is open source and runs on your own infrastructure. Click into a project to see its license, stars, language, and current health status.

Are they free?

All projects shown are free and open source. Check each project's license page for the terms — most are MIT, Apache 2.0, or AGPL.

// PART OF THESE COLLECTIONS