# Third-Party Licenses

This file lists all third-party software components used by LeoCRM,
along with their respective licenses.

## Backend Dependencies (Python)

| Package | License | Usage |
|---|---|---|
| FastAPI | MIT | Web framework |
| SQLAlchemy | MIT | ORM / database toolkit |
| Alembic | MIT | Database migrations |
| Pydantic | MIT | Data validation |
| Pydantic Settings | MIT | Settings management |
| asyncpg | Apache 2.0 | PostgreSQL async driver |
| Redis (redis-py) | MIT | Redis client |
| httpx | BSD-3-Clause | HTTP client |
| LiteLLM | MIT | Unified LLM interface |
| PydanticAI | MIT | AI agent framework |
| pypdf | BSD-3-Clause | PDF text extraction |
| python-docx | MIT | DOCX text extraction |
| openpyxl | MIT | XLSX text extraction |
| python-pptx | MIT | PPTX text extraction |
| aiofiles | Apache 2.0 | Async file I/O |
| minio | Apache 2.0 | S3-compatible storage client |
| cryptography | Apache 2.0 | Encryption (Fernet, PBKDF2) |
| bcrypt | Apache 2.0 | Password hashing |
| nh3 | MIT | HTML sanitization |
| python-multipart | Apache 2.0 | Multipart form parsing |
| pgvector | PostgreSQL License | Vector similarity search |
| APScheduler | MIT | Job scheduling |
| websockets | BSD-3-Clause | WebSocket support |

## Frontend Dependencies (Node.js)

| Package | License | Usage |
|---|---|---|
| React | MIT | UI framework |
| React Router | MIT | Client-side routing |
| TanStack Query | MIT | Server state management |
| TanStack Table | MIT | Table/data grid |
| Zustand | MIT | State management |
| Tailwind CSS | MIT | CSS framework |
| lucide-react | ISC | Icon library |
| date-fns | MIT | Date utilities |
| react-i18next | MIT | Internationalization |
| i18next | MIT | Internationalization core |
| react-hook-form | MIT | Form management |
| zod | MIT | Schema validation |
| clsx | MIT | Class name utility |
| Vite | MIT | Build tool |
| Vitest | MIT | Test framework |

## External Services

| Service | License | Usage |
|---|---|---|
| Collabora Online | LGPL/MPL | Document editing (DMS) |
| PostgreSQL | PostgreSQL License | Database |
| Redis | BSD-3-Clause | Cache / sessions |

## Replaced AGPL Components

The following AGPL-licensed components have been replaced with permissively
licensed alternatives to allow commercial use without copyleft obligations:

| Original | License | Replacement | License |
|---|---|---|---|
| PyMuPDF (fitz) | AGPL-3.0 | pypdf | BSD-3-Clause |
| OnlyOffice | AGPL-3.0 | Collabora Online | LGPL/MPL |

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*This file is maintained manually and should be updated when dependencies change.*