Tech support overload

I support many operating systems, applications and computer utilities, perhaps too many. The list grows with time. It rarely shrinks.

Here is a list of the more common software programs I need to know because my clients run them. This list generally excludes service pack variations.

Client Operating Systems

• Windows XP Home
• Windows XP Media Center Edition
• Windows XP Professional
• Windows Vista Home Basic
• Windows Vista Home Premium
• Windows Vista Business
• Windows Vista Ultimate
• Windows 7 Starter Edition
• Windows 7 Home Premium
• Windows 7 Professional
• Windows 7 Ultimate
• OS X Tiger
• OS X Leopard
• OS X Snow Leopard

Server Operating Systems *

• Windows Server 2003 R2 Standard Edition
• Windows Server 2008, Standard Edition Service Pack 1
• Windows Home Server with Power Pack 1
• Mac OS X Server v10.6 Snow Leopard

Applications (most common only, list is not exhaustive)

• Adobe Acrobat
• Adobe Flash
• Adobe Photoshop – Elements, CS3, CS4
• Adobe Reader
• Aol All-in-One Software
• BlackBerry Desktop
• DropBox
• Finder
• Front Row
• Google Chrome
• Java
• Karenware PT Replicator
• iLife
• Industry specific applications such as medical practice management suites.
• iTunes
• iWork
• McAfee security suites
• Microsoft Office XP (AKA 2002)  - all editions
• Microsoft Office 2003  - all editions
• Microsoft Office 2004 (Mac)
• Microsoft Office 2007  - all editions
• Microsoft Office 2008 (Mac)
• Microsoft Office 2010 – all editions
• Microsoft Security Essentials
• Mozilla Firefox
• Norton security suites
• Parallels Desktop
• Printer, fax and scanner software
• Quicken
• QuickBooks
• Safari
• Skype
• Symantec security applications
• TurboTax
• Utilities (too numerous to list individually)
• VMware Fusion
• Windows Explorer – XP, Vista and Windows 7
• Windows Internet Explorer – IE 6, 7 and 8
• Windows Media Center
• Windows Media Player
• Windows Virtual PC
• Windows XP Mode
• WordPress

Router Administrative Consoles

• Apple
• Belkin
• Cisco
• D-Link
• Linksys
• NETGEAR
• TRENDnet
• ZyXel

It gives me a headache to contemplate this list. No wonder I get more and more confused.

* I omitted server products like Exchange Server 2003-2010, SharePoint Sever 2001-2010, Office Web Apps, Forefront… because my brain melts when I contemplate these as well as all the above.