Software router is a term denoting a computer or a PC designated to do the task of routing packets between networks. Because real hardware routers are costly (in most cases costlier than an average PC), this technique of modifying the PC and using it as a router is desired. The changes include but not limited to attaching two or more NICs network interface cards, to connect different networks, upgrading the current hardware such as installing additional memory modules etc.

See also

• Computer network
  Computer network
  A computer network, often simply referred to as a network, is a collection of hardware components and computers interconnected by communication channels that allow sharing of resources and information....
  
  
• Router
• List of router or firewall distributions