ZeroShell is a Linux-based open source network and server administration application. It is designed to simplify the management of networks and servers, providing users with a comprehensive range of features, including: -Network routing, bridging, and firewall functions -User authentication and management -VPN / IPSec support -Traffic shaping and bandwidth management -Network resource monitoring -Dynamic DNS support -Wireless access point support -System logging and reporting -Advanced packet capture and analysis ZeroShell can be used to manage both large and small networks, making it an ideal solution for businesses of all sizes. It offers a comprehensive set of features and is easy to install and use. It also supports multiple languages, making it suitable for international use.
pfSense
OPNsense
Kerio Control
SmoothWall
IPCop
Forefront Threat Management Gateway
Rusroute
Discontinued The project seems to be no longer updated. The latest version, 2.1.9, released in February 2015, can still be downloaded from the official website.