ForLinux
- Offer installation and support of linux business systems. Based in Nottinghamshire, UK.
- http://www.forlinux.co.uk/

Pantek
- Provider of certified telephone and on-site support for all Linux software and distributions.
- http://linux.pantek.com/

Linux911 Linux-911 support services
- Computer network repair company, specializing in on-site, on-line and phone support for Linux.
- http://www.linux-911.com/

Linux Services
- Provides Linux configuration, installation, support and training to businesses.
- http://www.adroitsys.com/

TeleDynamics Communications
- Linux networking support, including system security, web management, and web hosting. (Canada)
- http://www.teledyn.com

Enterprise Linux Support
- Linux support for businesses, including systems administration, software development, and integration. (United States)
- http://e.linux-support.net/

Linux Network Care Inc
- Both free and commercial support for Linux Networks and lots of information and hot tips about Linux.
- http://www.linuxnetworkcare.com/