To implement some features IRT Cronista uses these open source libraries and programs:
zlib
Copyright (C) 1995-2017 Jean-loup Gailly and Mark Adler
libzip
Copyright (C) 1999-2017 Dieter Baron and Thomas Klausner <libzip@nih.at>
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
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/