LEGAL
Third-Party Licenses
Haystack includes open-source software. We gratefully acknowledge the following projects and their authors.
License types
Components
| Library | Package | License |
|---|---|---|
| gRPC | grpcio | Apache-2.0 |
| PyNaCl | PyNaCl | Apache-2.0 |
| httpx | httpx | BSD-3-Clause |
| joblib | joblib | BSD-3-Clause |
| NumPy | numpy | BSD-3-Clause |
| Protocol Buffers | protobuf | BSD-3-Clause |
| SciPy | scipy | BSD-3-Clause |
| python-soundfile | soundfile | BSD-3-Clause |
| Qt for Python / PySide6 | PySide6 | LGPL-3.0 |
| pydantic | pydantic | MIT |
| python-dotenv | python-dotenv | MIT |
| Matplotlib | matplotlib | Matplotlib License |
| tqdm | tqdm | MPL-2.0 AND MIT |
Copyright
Haystack © 2026 WaveMaven. All rights reserved.