SyncBack Free. Back-Up your data etc
Microsoft MSE AV. This has surprised many reviewers, so don't laugh! If your computer hibernates, you will need to manually update. There is a beta in testing that resolves the latter
Panda Cloud AV. New style. Instead of downloading updates all the time, it connects to the central data base. Very light. Do a full HDD scan immediately after installation to build the 'good' cache!
Avast V5 AV Free. The latest of the very popular program from the Czech Republic. Needs free registration
Password Depot. FREE - up to 20 passwords
KeePassWord Safe. FREE - unlimited.
eM Client - Outlook alternative. Email/Calendar/Contacts/Tasks & more. Free for up to 2 accounts
Auslogics disk-defrag FREE. Use this one instead of the built-in defragger
MalwareBytes, MBAM. Use the FREE version, on demand scanning only, as backup for your main AV. Do a manual update weekly
Software - free, not just 'free download' & then pay up. Beware of the careful use of words