Product A
PostHog
by PostHog Inc.
Open-source product analytics with feature flags, session replay, and A/B tests — self-hostable.
Free tier
Visit PostHog →Product B
Segment
by Twilio Inc.
The leading Customer Data Platform — collect once, send everywhere.
Free tier
Visit Segment →Side-by-Side Comparison
| Feature | PostHog | Segment |
|---|---|---|
| Price | FreeBetter | Free |
| Free Tier | Yes | Yes |
| Top Pros | All-in-one: analytics + feature flags + session replay + A/B | 400+ destination integrations — instrument once, route anywhere |
| Open-source and self-hostable | Strong data governance and consent management | |
| Most generous free tier in the category (1M events) | Industry-standard data layer for modern stacks | |
| Top Cons | UI less polished than Amplitude or Mixpanel | Not an analytics tool itself — needs downstream tools |
| Self-hosting requires infrastructure management | Costs scale quickly with MTUs |
Choose PostHog if you…
- Want: all-in-one: analytics + feature flags + session replay + a/b
- Want: open-source and self-hostable
- Want: most generous free tier in the category (1m events)
Choose Segment if you…
- Want: 400+ destination integrations — instrument once, route anywhere
- Want: strong data governance and consent management
- Want: industry-standard data layer for modern stacks