Open source alternatives to Microsoft Clarity

By GitHub stars it is PostHog, with 40,775 stars and a commit on 14 Nov. Choose PostHog when you also need funnels, feature flags and experiments next to session replay; its free plan covers 1M events and 5,000 recordings a month, and you can self-host it. Next come Rybbit (13,300 stars) and OpenReplay (13,144 stars).

Yes. The code of all 3 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 Microsoft Clarity for. Choose OpenReplay when recordings must stay on your own servers or developers need console and network logs with each session; the self-hosted edition is free. Choose Rybbit when you want cookie-free traffic analytics with funnels and session replays in one dashboard; Pro costs $39 a month for 100,000 pageviews.

All 3: PostHog, Rybbit and OpenReplay. Each tool's page says what it needs to run.

All 3 we track had a commit in the last 30 days, among them PostHog, Rybbit and OpenReplay. A recent commit shows the project is kept up, not that it will stay that way.

AGPL 3.0 (2), MIT (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. Microsoft Clarity'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.