SOHO (Single Office/Home Office) Firewall Appliances are dedicated hardware/software solutions designed for small company or home networks, typically less than 25 computers. Many of the firewall appliances also act as routers, and offer other services such as VPN, content scanning, and virus scanning. Many offer functionality required by remote offices to connect to the central office as well.
The vendor definitions of SOHO appliances can vary greatly, if you don't find what you need here, be sure to check the Enterprise Firewall Appliance page as well.