Windows, Mac, Linux

CNet's Download.com
Completely Free Software
ZDNet
TuCows
TuDogs
WinSite

DLL Sources

Sometimes something happens to your computer and you find yourself staring at the screen wondering what the heck is a xxxxx.dll and why is it missing? Sometimes all it takes is figuring out what program the .dll file comes from and re-installing the program from the original disk or CD. If you don't have it, go to these sources to find replacement files and help.

UFO Resources - DLL, ocx, and CD-ROM driver downloads
The DLL Archive
DLL World
DLL Star

Drivers

Drivers are the software that allows your computer to "talk" to the peripherals devices like printers, scanners, etc. If you misplace a driver, it gets corrupted, or is otherwise gone, go to these websites to either download another one, if they have it, or ask around in the forum for help. Windows PC only.

WinDrivers.com - free (if this changes, please let me know)
Drivers Headquarters - membership $29.95
DriverZone - free
WinGuides'  Driver Guide for Windows
DriverGuide.com - I decided to add this resource because they also have drivers for other systems. By free membership to The Driver Guide.