I took a look at the many options, did some actual testing, and chose Piwik Pro because:
1. Looks and works a lot like GA3/Universal Analytics. Perhaps more importantly, its numbers were consistently with +/- 5% of GA3.
2. Has its own tag manager but can also work through GTM.
3. Built in consent manager if you need it.
4. Free up to 500,000 hits/events per month.
5. The real-time tracker/debugger makes it easy to troubleshoot issues and verify tag changes.
6. Great support community. Review collected by and hosted on G2.com.
I wish that the data for the free version went back for 24 months instead of 14 months. Review collected by and hosted on G2.com.
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Organic review. This review was written entirely without invitation or incentive from G2, a seller, or an affiliate.
