PostHog
The closest all-in-one replacement, with a large free tier
The most natural destination for a team leaving Mixpanel, and our first recommendation if you want breadth. Funnels, retention, session replay, feature flags and experiments in one product, open source, self-hostable, with a free tier large enough that many small teams never pay. Billing is still usage-based, so the fundamental complaint about metering is softened rather than solved.
Strengths
- Replay, feature flags and experiments included, not sold separately
- Very large free tier, then usage-based pricing
- Open source with a genuine self-hosting path
Trade-offs
- Usage-based billing still moves with volume
- Broad surface area takes real time to learn
- Error tracking exists but is not the reason anyone chooses it