Mozilla Firefox is a free and open source web browser, developed and distributed by the Mozilla Foundation with the help of thousands of volunteers thanks to open source development methods and the freedom of the source code.
FileZilla ®, the free FTP solution. The FileZilla Client not only supports FTP, but also FTP over TLS (FTPS) and SFTP.
It is open source software distributed free of charge under the terms of the GNU General Public License.
The CEA, CNRS and Inria have thus developed CeCILL, the first license that defines in this framework the principles of use and distribution of free software while remaining in the spirit of the GNU GPL. GuppY is protected by the CeCILL license.