pfSense - pfSense is a free and open source firewall and router that also features unified threat management, load balancing, multi WAN, and more
Xmind - Xmind is a brainstorming and mind mapping application.
Zentyal - Linux directory, domain, mail, gateway and infrastructure server for SMBs.
MindManager - With MindManager, flexible mind maps promote freeform thinking and quick organization of ideas, so creativity and productivity can live in harmony.
NethServer - NethServer is an operating system for Linux enthusiasts, designed for small offices and medium...
MindMeister - Create, share and collaboratively work on mind maps with MindMeister, the leading online mind mapping software. Includes apps for iPhone, iPad and Android.