ide: visual studio / netbeans (zip file !, almost portable)
editor: notepad ++ (portable) with monaco font
file comparison: winmerge (portable)
source control: subversion, turtle
ticket management: redmine
file manager: free commander (portable)
explorer: IE, FF (portable), chrome (portable), iron (chrome without google-crap, also portable), qtweb, arora,
FF Plugins: firebug, web developer, xmarks
imclient: pidgin
email client: gmail
download manager: free download manager (portable)
sites: STACKOVERFLOW !!!, gotapi ... and google, all the time ...
miscelaneous: launchy (can't live without it!)
virtualization: virtual box (I have a machine image for each environment)
office: openoffice (portable)
lamp stack: xammp (portable!)
disc usage: windirstat (portable), scanner (portable)
pdf viewer: foxit (portable), sumatrapdf (portable)
uncompressor: 7-zip portable
Comparison tool M $ sql: sql delta p>
M $ sql management: sql visual studio manager
MySQL
Mysql management: phpmyadmin, manager with mysql
Removal Tool: revo unistaller (portable)
registry cleaner: ccleaner (portable)
ftp: filezilla (portable)
as you may have noticed, I have a particular passion for portable applications ...