# Third party libraries

## graphite2 (optional)

- Upstream: http://site.icu-project.org/
- Version: 1.3.14
- License: LGPL 2.1+ or GPL 2 or MPL

## freetype

- Upstream: https://www.freetype.org
- Version: 2.10.2
- License: FreeType License (BSD-like) or GPL 2

## HarfBuzz

- Upstream: https://github.com/behdad/harfbuzz
- Version: 2.6.6
- License: MIT-like License

## ICU4C

- Upstream: http://site.icu-project.org/
- Version: 67.1
- License: Unicode, Inc. License
- Note: USTRING_H header guard is renamed to ICU_USTRING_H to avoid conflivt with Godot header.

## libpng

- Upstream: http://libpng.org/pub/png/libpng.html
- Version: 1.6.37
- License: libpng/zlib

## zlib

- Upstream: http://www.zlib.net
- Version: 1.2.11
- License: zlib
