Cisco  Systems, Inc. is an American multinational technology company headquartered in San Jose, California, that designs, manufactures, and sells networking equipment

D-Link is a Taiwanese multinational networking equipment manufacturing corporation headquartered in Taipei, Taiwan. It was founded in March 1986 in Taipei as Datex Systems Inc.^[1] It began as a network adapter vendor and has gone on to become a designer, developer, and manufacturer of networking solutions for both the consumer and business markets.

Netgear, (stylized, trademarked, and marketed as NETGEAR) is an American global networking company that delivers products to consumers, businesses, and service providers. The company operates in three business segments: retail, commercial, and service provider.

Linksys is an American company selling data networking hardware products mainly to home users and small businesses. Its products include wired and wireless routers, Ethernet switches, VoIP equipment, wireless internet video cameras, audiovisual products, and network storage systems

TP-LINK stylized, trademarked, and marketed as TP-LINK, is a Chinese manufacturer of computer networking products based in Shenzhen, Guangdong province, China. TP-LINK is the largest Small Office and Home Office (SOHO) networking market share holder in China.^[2][3] TP-LINK was the leader in global shipments of wireless LAN products as of the first quarter of 2013.