PostHog vs Seline
Side by side, from each tool’s own pages. Highlighted rows are where the two differ.
 PostHog | Seline | |
|---|---|---|
| Pricing | ||
| From (USD / month) | Not listed | $9 |
| Price model | Freemium | Paid (differs) |
| Free plan | Yes | No (differs) |
| Free trial | Not listed | 7 days |
| Privacy and hosting | ||
| Cookieless by default | Not listed | Yes |
| EU hosting | Yes | Yes |
| Data regions | US (Virginia), EU (Frankfurt) | EU (differs) |
| Script size | Not listed | 2 KB |
| Code and company | ||
| Open source | Yes | Not listed |
| License | MIT | Not listed |
| Vendor | PostHog | Seline (differs) |
| First recorded | Not listed | 2024 |
| Last checked | October 26, 2026 | October 26, 2026 |
| Listed features | ||
| API | Not listed | Yes |
| Custom events | Not listed | Yes |
| Error tracking | Yes | Not listed |
| Funnels | Yes | Yes |
| MCP server | Yes | Yes |
| Realtime | Not listed | Yes |
| Revenue | Not listed | Yes |
| Session replay | Yes | Not listed |
| UTM tracking | Not listed | Yes |
| Filed under | ||
| Cookieless analytics | No | Yes (differs) |
| Product analytics | Yes | Yes |
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Disclosure: OnyxMetric is made by the publisher of this guide. It is recorded with the same field marks as every other tool, and links to it carry a referral tag so we can count visits.