Open source alternatives to Mixpanel

By GitHub stars it is PostHog, with 40,775 stars and a commit on 14 Nov. Choose PostHog when engineers want analytics, replays, flags and error tracking in one open source product with billing limits per product; its free plan also covers 1M events a month. Next come OpenPanel (7,296 stars).

Yes. The code of all 2 is public under MIT or AGPL 3.0, so you can use them with no licence fee. Running one yourself costs the server and your time to look after it, and some makers also sell a hosted plan.

Start from the job you use Mixpanel for. Choose OpenPanel when you want Mixpanel-style funnels and retention that you can self-host for free, or a cloud plan that stops at its cap instead of billing overage; 250,000 events cost $30 a month.

All 2: PostHog and OpenPanel. Each tool's page says what it needs to run.

All 2 we track had a commit in the last 30 days, among them PostHog and OpenPanel. A recent commit shows the project is kept up, not that it will stay that way.

MIT (1), AGPL 3.0 (1). MIT, BSD and Apache let you change and reuse the code freely. GPL and AGPL ask you to share your changes under the same licence when you give the software to others, and AGPL also counts letting people use it over a network.

The hosting. Mixpanel's maker runs the servers for you; with an open source tool the updates, backups, security fixes and support are yours, unless you take the maker's hosted plan. Features differ too, so check what each one imports and exports before you move your data.