Notepad entry (will be updated every once in a while).
Some Add-Ons for Firefox that I use:

Abduction – Helpful tool to create screen- or webshots.
BetterPrivacy – Since the methods of datamining get better, one needs better defense.
ColorZilla – A colorpicker, ’nuff said.
DNS Prefetch – While Firefox 3.5 will do DNS prefetching to speed up the browsing, [...]

Notepad entry (will be updated every once in a while).
Some Add-Ons for Thunderbird that I use.

Enigmail – E-mail encryption. Not using it as much as I should, but then again I can’t really decide if I should use S/MIME or PGP or both to sign my stuff. Once I get over that I will use [...]