Frawley Integrated Network Engineering, Inc.  
   Specializes in the design and construction of computer networks, and custom built computers.
   http://www.fine-networks.com/

Frigate Networks  
   Based in San Jose, California.
   http://www.frigate.com/

Ferrante Computer Services  
   Computer systems integrator and networking specialist.
   http://www.ferrantecomputer.com/

Firm Foundation Technology  
   Network design and analysis, server upgrades, maintenance, technical support and on-site training.
   http://www.firmfoundationtechnology.com/

Ferrell Companies, Inc.  
   Provides accounting and project management software, and networking solutions including VPNs, LANs, and WANs for the construction industry and others.
   http://www.ferrell.net/

FAB Solutions and Systems  
   IT consultancy and networking solutions (VPN's LAN's and WAN's), along with sales, bespoke software and database design for small businesses within Swansea and South West Wales.
   http://fab-sas.co.uk/