F5 Networks: Load balancing (computing), Application delivery controller, Cisco Systems, Citrix Systems, Barracuda Networks, Nortel, Foundry Networks, Ecessa, Coyote Point Systems, A10 Networks

F5 Networks, Inc. is a networking appliances company. It is headquartered in Seattle, Washington and has development and marketing offices worldwide. It originally manufactured and sold some of the first load balancing products. F5 Networks' flagship product, the BIG-IP network appliance, was originally a network load balancer but today also offers other functionality such as access control and application security. Add-on modules to F5's BIG-IP family of products offer email filtering and intelligent compression to allow for lower bandwidth and faster downloads in addition to load balancing and local traffic management capabilities.