Java Dev on Win7
Intellij Pro,
Cygwin with Emacs,
Git command line, sometimes SourceTree (though Intellij Git is almost as feature complete).
Tortoise on projects still using Subversion.
Firefox with Firebug, LiveHttpHeaders, and WebDeveloper though more and more Chrome Dev tools.
Usually the standard DB tool depending on database (PGAdmin for Postgres, SqlDeveloper for Oracle, etc.), though Intellij's DB tools are getting 'good enough'.
I'd pay good money for a well developed Emacs keyboard binding for Intellij (similar to Emacs++ for Eclipse)!