Primarily Windows based operating systems and some Linux systems.
Windows
- Windows 95/98/ME (yes there are still a few of those floating around out there)
- Windows 2000/2000 Server (there are also some of those still out there)
- Windows XP
- Windows Server 2003
- Windows Vista (on a limited basis, in all honesty I am not overly thrilled with that particular OS)
- Windows Server 2008 (my exposure to this OS has been very limited, so I tend to be highly cautious working on this particular system)
- Windows 7 (I have only minimal exposure to this so at this time I do not yet feel qualified to work with it)
Linux
- Red Hat based distributions:
- Red Hat
- Fedora Core
- CENTOS (this happens to be my preferred Red Hat distribution, especially for a server)
- Debian based distributions:
- Debian
- Ubuntu (my personal preference for desktop and server OS within the Linux Family)
- PCLinux OS
- Linux Mint
- OpenSuse (I have had some exposure to this where I feel mildly comfortable setting it up)
FreeBSD is a system that I have not had enough exposure to yet to feel even remotely comfortable doing anything with.
Gentoo is another system that I have touched on very briefly but I have a very hard time understanding how to set it up.