A few of my tools:

Code: python and objective-c.

Compiler: Xcode + git.

Editors: smultron + cyberduck + sequel pro + ssh.

Design: javascript and html5/css3.

Frameworks: django and jquery.

Virtual servers: vmware and ec2/eucalyptus.

Databases: postgres and mongodb.

Messaging: erlang and rabbitmq.

Compositing: nuke/resolve and fcp/motion.

Cameras: panasonic and red.

Computers: macs and unix.