Head to head
| Metric | Flow | TypeScript | mypy | Pyright |
|---|---|---|---|---|
| Stars | 22.3k | 112k | 20.7k | 15.7k |
| Weekly downloads | 400k | 418M | 48M | 1.4M |
| Download growth | -10% | +30% | +29% | +27% |
| Popularity score | 73/100 | 96/100 | 87/100 | 76/100 |
| Forks | 1.9k | 15.1k | 3.4k | 1.8k |
| Open issues | 503 | 5.3k | 3.2k | 403 |
| Last commit | 2d ago | 2d ago | today | 5d ago |
| Latest version | 0.339.0 | 7.0.2 | 2.4.1Oct 28, 2026 | 1.1.414 |
| License | MIT | Apache-2.0 | n/a | n/a |
| First released | 2014 | 2014 | 2012 | 2019 |
| Signals | Legacy | Popular | Popular | Popular |
| Listed in | Languages & Runtimes › Type Checkers & Compilers | Frontend › Languages, Runtimes & Package ManagersLanguages & Runtimes › Most-Used LanguagesLanguages & Runtimes › Type Checkers & Compilers | Languages & Runtimes › Type Checkers & Compilers | Languages & Runtimes › Type Checkers & Compilers |
Weekly downloads over time
Hover for exact values; switch to log scale for tools of very different sizes. Not shown (no comparable download data): mypy.
- Flow
- TypeScript
- Pyright