Checking Adobe, Windows, etc. updates
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Note: Make sure to check with each browser on the machine if trying to protect from the zero-day Adobe/Java threat.
Free Programs
File Hippo (List of many free programs for PC like Adobe, Quicktime, CCleaner, etc.)
Softpedia (List of many free programs for PC and MACs)
Opensourcemac (List of many free programs for MACs)
CNET (List of many free programs for MAC's)