Meta's open-source Python type checker built for speed. Analyzes large codebases faster than mypy or pyright with a Rust-powered inference engine.
Best For
Teams & solo builders
Key Pros & Cons
Watch Out For
- Low community score (4/100) β smaller support network
Market Momentum
15
-14
24h
-7
7d
+18
30d
14-day heat score history
Creator Buzz4
Search Interest11
Community Activity4
Abandonment & Maintenance Risk
Monitor Closely
Trend phaseDeclining
30-day score change+18 pts
Listed on HookFlow1mo old
Discontinued flagβ No
Risk Factors
- Declining trend β worth monitoring
Data Lock-In Index
100
/ 100 (lower = more open)
β Webhooks Outβ Bulk Exportβ Open Formats
Company DNA
Founded
2008
18y old
est. via Wayback
Source
Wikidata Q135658865vs. Category Peers (AI Coding)
Tool
A.R.C.
Heat
7d Ξ
Lock-In
Pyrefly (this)
β
15
-7
100
Cursorβ² Rising
AI-native code editing with full codebase context
C
82
+31
66
Clineβ² Rising
β
56
+41
33
Lovableβ² Declining
No-code app builder
β
Snapshot Disclaimer: All scores, rankings, and metrics in this report reflect data as of June 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 June 20, 2026hookflow.ai