Chatrabas.app includes the following open-source software and data.

Qt for Python (PySide6) and Qt 6 - LGPL-3.0. The Qt libraries are kept as separate files next to
  the program, so they can be replaced. Source: https://code.qt.io
OpenCV (opencv-python-headless) - Apache-2.0. https://opencv.org
YuNet face detection and SFace face recognition models, OpenCV model zoo - Apache-2.0.
  https://github.com/opencv/opencv_zoo
NumPy - BSD-3-Clause. requests, cryptography - Apache-2.0. keyring - MIT.
Roboto, Roboto Mono, Noto Sans Devanagari - SIL Open Font License 1.1 (see fonts/OFL-*.txt).
