The following is a list of development tools I use, some more than others.

[Aptana](http://www.aptana.com/)

    Basically the same as Eclipse except it handles JavaScript and CSS files with more support.

[cfcdoc](http://cfcdoc.riaforge.org/)

    Great tool to introspect your projects and provide CFC documentation.

[CFEclipse](http://www.cfeclipse.org/)

    The one and only plugin every ColdFusion developer should be using :)

[Charles debugging proxy](http://www.xk72.com/charles/)

    Man of the match for this list, it is truly Firebug on steroids.

[Dean Edwards JavaScript Packer](http://dean.edwards.name/packer/)

    Packs your JavaScript files cleanly for smaller download times.

[Eclipse](http://www.eclipse.org/)

    Need I say more?

[JMeter](http://jakarta.apache.org/jmeter/)

    Java based load testing tool, completely invaluable.

[JS Minifier](http://fmarcia.info/jsmin/test.html)

    JavaScript minifier

[YUI Compressor](http://developer.yahoo.com/yui/compressor/)

    Yahoo! JS and CSS compressor

[Mylyn](http://www.eclipse.org/mylyn/)

    Use it to add/edit/view 'Trac' tickets from within Eclipse.

[Selenium](http://selenium.openqa.org/)

    Client side testing tool, fantastic.

[varScoper](http://www.schierberl.com/varScoper/)

    How can any ColdFusion developer live without this? Lets you know when you haven't var scoped function variables in CFC's.

[character map](http://www.trinet.co.uk/charcodes.asp)

    Character Map

[claimID](http://claimid.com/)

    Open Id

[Montastic

    Free site monitoring tool

[mon.itor.us](http://mon.itor.us/)

    Another free site monitoring tool

[lorem2](http://lorem2.com/)

    A latin sample site (like lipsum.com)