International Network Services
- Offer a full range of consulting services and business solutions. End-to-end network consulting solutions address needs in Next Generation Networking, security, and network and systems management.
- http://www.ins.com/

Intercon Systems
- Network integration and consulting company providing details on solutions to customers in the Asia Pacific region.
- http://www.interconsys.com/

ICS Solutions, Inc.
- Network consulting services based in Dundee, IL.
- http://www.icss.com/

InfoMax Consulting Services Inc.
- Details on system integration, network implementation, site design, and web application development services.
- http://www.e-infomax.com/

Issi Network Services
- Provides system installation and technical support for software, hardware, maintenance, LAN/WAN, Internet/Intranet consulting and development.
- http://www.issinetwork.com/

Internetworking Strategies Ltd
- Network security consultants providing advice on security policy, strategy and design. Also provides implementation and support.
- http://www.insl.co.uk/

InterLAN Consulting Inc.
- A vendor-independent internetworking consulting firm, specializing in Internet security (firewall, VPN and PKI) and design and implementation of enterprise LAN and WAN networks.
- http://www.interlanconsulting.com/

Internet Bandwidth Development
- design and development of internet infrastructure.
- http://www.ibd.com/

Integrated Technical Services
- Provides expertise in the design, deployment and support of complex computing environments. Specializes in routing, LAN, WAN, Internet, Intranet, and UNIX environments.
- http://www.itsco.com/

Incognito Software Inc.
- Providing DNS, DHCP, TFTP, ToD and IP management solutions for enterprises, hosting providers, and broadband service providers.
- http://www.incognito.com/

iMedia Technology, Inc.
- Vendor independent Internet and network-consulting. Serving southeastern MA, Cape Cod and the Islands.
- http://imediatech.com/