Microsoft Knowledge Base Searchable database with articles concerning known issues with Windows operating systems. 
Driver Guide Find drivers listed by vendor and download free of charge.
Intel Processor, motherboard and chipset information.
Cisco Routers & Switches Product, training and certification information.
MS PowerPoint Viewer Download this viewer if you do not have PowerPoint installed on your computer.
PC Pitstop For online diagnostic testing and optimization.
Comptia Information on industry wide certifications.
Brain Buzz Contains free study guides and practice exams.
Acrobat Reader Get free downloadable version to open pdf files.
Grisoft Get free downloadable AVG Anti-virus software.