Open-source product analytics platform with session replays, feature flags, and A/B testing. Built for developers who want full data control.
Best For
Teams & solo builders
Key Pros & Cons
Strengths
- Open source β no per-token cost at scale
- Native integrations β plug-and-play with popular tools
- Headless viable β runs without a GUI, suitable for server-side use
- Official SDK β reduces integration boilerplate
- Bulk data export β your data stays portable
Watch Out For
- Low community score (26/100) β smaller support network
Market Momentum
40
-6
24h
+3
7d
+23
30d
14-day heat score history
Creator Buzz8
Search Interest47
Community Activity26
Community Signals
npm Downloads
8.9M
/ week
posthog-js
Abandonment & Maintenance Risk
Low Risk
Trend phasePeak
30-day score change+23 pts
Listed on HookFlow5mo old
Discontinued flagβ No
npm packageposthog-js
Risk Factors
- No major abandonment signals detected
- Negative score trajectory (-2.00 pts/day)
A.R.C. Infrastructure Assessment
Architecture (40%)92
Reliability (35%)90
Context (25%)72
API Access
Native Integrations
Data Portability
Full Export
Headless Viable
Yes β
Official SDK
Yes β
Uptime (30d)
99.9%
Unit Cost
Open source Β· Cloud from $0/mo
Billing Model
Data Lock-In Index
0
/ 100 (lower = more open)
Open-Data Compliant ββ Webhooks Outβ Bulk Exportβ Open Formats
Pricing: Open Source | Free trial: Yes
vs. Category Peers (Developer Tools)
Tool
A.R.C.
Heat
7d Ξ
Lock-In
PostHog (this)
B
40
+3
0
Renderβ² Rising
β
90
+18
100
llm
β
90
+23
33
Bunβ² Rising
β
73
+13
100
Snapshot Disclaimer: All scores, rankings, and metrics in this report reflect data as of July 20, 2026. Heat scores, community activity, and market momentum are recalculated daily β figures shown here represent a point-in-time snapshot and may differ from current values on HookFlow.ai.
HookFlow.ai Infrastructure Report β July 20, 2026hookflow.ai