Polars vs Apache Arrow
Side-by-side comparison of Polars and Apache Arrow to help you choose the right tool.
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| Feature | Polars | Apache Arrow |
|---|---|---|
| Pricing | Free (open source) | Free (open source) |
| Rating | ⭐ 4.7/5 | ⭐ 4.6/5 |
| Categories | data-science | data-science, streaming |
| Lazy evaluation | ✅ | ❌ |
| Multi-threaded | ✅ | ❌ |
| Arrow-based | ✅ | ❌ |
| Expression system | ✅ | ❌ |
| Streaming | ✅ | ❌ |
| SQL interface | ✅ | ❌ |
| Columnar format | ❌ | ✅ |
| Cross-language | ❌ | ✅ |
| Zero-copy reads | ❌ | ✅ |
| Flight RPC | ❌ | ✅ |
| Compute kernels | ❌ | ✅ |
| Parquet integration | ❌ | ✅ |
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