To implement some features IRT Cronista uses these open source libraries and programs:

zlib

https://zlib.net/

Copyright (C) 1995-2017 Jean-loup Gailly and Mark Adler

libzip

https://libzip.org/

Copyright (C) 1999-2017 Dieter Baron and Thomas Klausner <libzip@nih.at>

libcurl

https://curl.haxx.se/libcurl/

Copyright (c) 1996 - 2019, Daniel Stenberg, <daniel@haxx.se>

QR Code generator library

Copyright © 2022 Project Nayuki. (MIT License)

https://www.nayuki.io/page/qr-code-generator-library

Axialis

http://www.axialis.com

Some of the used icons are courtesy of Axialis Software.

If source code of a library was modified it can be downloaded from here: http://www.grayess.com/open_source/