Networking and Telephony
Project website: http://www.funambol.com/
Project Information: Funambol is the leading mobile open source project and leading provider of open source mobile cloud sync and push email for billions of phones.
Books on Funambol:
Project website: http://www.nagios.org/
Project Information: Nagios is a popular open source computer system and network monitoring software application.
Books on Nagios:
Project website: http://www.opensips.org/
Project Information: OpenSIPS is a Session Initiation Protocol (SIP) proxy server, call router, and user agent registration server used in Voice over Internet Protocol and instant messaging applications.
Books on OpenSIPS:
Project website: http://openvpn.net/
Project Information: OpenVPN is a free and open source software application that implements virtual private network (VPN) solutions for creating secure point-to-point or site-to-site connections in routed or bridged configurations and remote access facilities.
Books on OpenVPN:
Project website: http://www.lifewithqmail.org/
Project Information: Qmail is an Internet Mail Transfer Agent (MTA) for UNIX-like operating systems.
Books on Qmail:
Project website: http://www.trixbox.org/
Project Information: An Asterisk-based PBX Phone System (formerly Asterisk@Home).
Books on trixbox:
Project website: http://www.zabbix.com/
Project Information: Zabbix is an enterprise-class open source distributed monitoring solution.
Books on Zabbix: