- FireFox browser. Much better than Internet Explorer. Rarely crashes; faster; has tabbed browsing.
- The Google Toolbar (or, for FireFox, the GoogleBar).
- Google Desktop search. This is just fantastic: google indexes emails, Word files and other documents on your computer and instantly shows results when you do a google search.
- SharpReader: a great RSS feed aggregator. How did I live without it?
And most of these, the indefatigable Jeff Tucker told me about! Also increasingly useful: Skype, with its free Internet telephony; and AIM, which also now has Internet telephony and even video (which I have not tried yet).