Currently GNUPanel is based on a PostgreSQL 8.1 database that stores all server configuration and hosting accounts information. Is strongly supported by some of the best tested free software tools: Apache, Postfix, Courier, PostgreSQL, MySQL, PowerDNS, ProFTPD, PHP, Perl and different utilities for the client (PHPMyadmin, PHPPgadmin, Squirrelmail and Mailman).
Some daemons and Perl scripts has been written for Apache, Mailman, disk space and bandwidth control that interacts with the database.

On a Debian system the installation script will use these directories:

/usr/share/gnupanel (control panel)

/usr/local/gnupanel (all daemons and cron scripts)

/var/www/sitios (virtual hosting)

The software we use with GNU Panel

• Apache – The world’s most popular Web server software
• PowerDNS – Modern, advanced and high performance nameserver
• ProFTPD – Highly configurable GPL-licensed FTP server software
• Postfix – Fast, easy to administer, and secure
• Courier Mail Server – Integrated mail/groupware server
• Squirrelmail – a standards-based webmail package
• Mailman – The GNU Mailing List Manager
• PHP – A general-purpose scripting language
• Perl – A compiled scripting language
• Bash – The command language interpreter in the GNU operating system
• PostgreSQL – The world’s most advanced open source database
• MySQL – A popular open source database
• phpPgAdmin – Web Based PostgreSQL Administration Tool
• phpMyAdmin – MySQL administration tool
• Dia – a gtk+ based diagram creation program released under the GPL license
• Quanta – a highly stable and feature rich web development environment.
• GNU – a complete Unix-like operating system which is free software