Open source alternatives to Clicky

By GitHub stars it is Matomo, with 22,027 stars and a commit on 13 Nov. Choose Matomo when you want unlimited sites and users on your own server, with no monthly bill for the core software. Next come Rybbit (13,300 stars) and Tianji (3,119 stars).

Yes. The code of all 6 is public under GPL 3.0 or later, AGPL 3.0, Apache 2.0 or GPL 2.0, 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 Clicky for. Choose Betterlytics when you want real-time visitor stats plus funnels, replays and Core Web Vitals, with the code open and self-hosting free. Choose Open Web Analytics when you want heatmaps and visitor logs on your own PHP server, with no subscription to pay.

All 6: Matomo, Rybbit, Tianji, Open Web Analytics, Swetrix and Betterlytics. Each tool's page says what it needs to run.

All 6 we track had a commit in the last 30 days, among them Matomo, Rybbit, Tianji and Open Web Analytics. A recent commit shows the project is kept up, not that it will stay that way.

AGPL 3.0 (3), GPL 3.0 or later (1), Apache 2.0 (1), GPL 2.0 (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. Clicky'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.