head to head · open source
PostHog vs InsightFlare
PostHog has 40,693 GitHub stars, 3,603 forks, 5,637 open issues and last shipped yesterday. InsightFlare has 713 stars, 17 forks, 1 open issues and last shipped 5 days ago. PostHog leads on adoption by 5,607% (40,693 vs 713 stars). PostHog is written in Python under a custom or non-standard licence; InsightFlare is written in TypeScript under MIT. PostHog has attracted 9% as many forks as stars, InsightFlare 2%. PostHog was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (analytics, react), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| PostHog | InsightFlare | |
|---|---|---|
| GitHub stars | ★ 41K | ★ 713 |
| License | Custom / other | MIT |
| Written in | Python | TypeScript |
| Last push | 2026-11-08 | 2026-11-04 |
| Forks | ⑂ 3.6K | ⑂ 17 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick PostHog if
- You weight community size — 41K stars and counting
- You want the Custom / other license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick InsightFlare if
- You want the InsightFlare feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and InsightFlare fits your workflow better
About PostHog
Docs Community Roadmap Why PostHog? Changelog Bug reports PostHog is the open source platform for building self driving products PostHog provides every tool you need to build a successful product, and captures all the context agents need to proactively diagnose problems, uncover opportunities, and ship fixes: Self driving mode: Turn signals in your product data (errors, rage clicks, failed queries, and more) into researched reports and pull requests you review and merge. Product analytics: Autocapture or manually instrument event based analytics to understand user behavior and analyze data with visualization or…
read the full PostHog overview →
About InsightFlare
InsightFlare A powerful, privacy friendly open source web analytics tool that runs entirely on Cloudflare. Demo: Fully compliant with GDPR, with no cookies, so visits can be tracked legally without asking users for consent. Its original smart tracking intensity mechanism automatically adjusts visitor identifier persistence based on regional privacy regulations, balancing data integrity with privacy protection. The frontend analytics SDK is only about 3 KB after gzip compression and is distributed through Cloudflare's global CDN for excellent performance. The SDK includes custom event tracking ( data insightflare…
read the full InsightFlare overview →
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Frequently asked questions
Is PostHog or InsightFlare more popular?
PostHog has 40,693 GitHub stars and InsightFlare has 713. PostHog has the larger community by that measure.
Are PostHog and InsightFlare free?
Both are open source. PostHog has no licence declared in this registry, and InsightFlare is licensed under MIT. Both are free to self-host.
What is the difference between PostHog and InsightFlare?
PostHog is written in Python and InsightFlare in TypeScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, PostHog or InsightFlare?
Choose PostHog if you want the larger community (40,693 stars) or its Custom / other licence terms. Choose InsightFlare if its feature set, stack or MIT licence fits better. Both are self-hostable.