What are good tools for coding GM scripts?

[Metaphore]

What does everyone here use to write and debug JS for GM?

Anyone try to integrate FireFox client script debugging into VS 2005?

[Janiv]

I would highly recommend using Firebug (http://www.getfirebug.com/) to debug your JavaScript in Firefox.

Using console.log(string_to_output) can be very useful in tracking down where your code is and working through some bugs.

[Ishiro]

For writing, I just use EditPlus text editor.