I'm running Debian testing. I use KDE and konqueror for file browsing. Navicat Linux for DB administration, and my editor of choice is vim. It is not noob friendly, but I find I am much faster with a highly scripted vim setup rather than an ide such a RadRails.
RadRails is very nice and very very powerful, but I like my vim
keybindings 
-John
I run Ubuntu with Scite as the text editor, but I still miss Notepad++ and wish there was Textmate for Linux (or, better yet, that Macs were not insanely expensive in Brazil).
Since I run my production apps on Linux I find that developing on Linux is way better, for those little differences between platforms (and library configurations).
I'm currently a Windows user, but I'm considering getting away from it. I was wondering if there are developers out there who are doing Rails on a desktop Linux distribution, and what your essential tools are. A discussion of your general experience would be great, too.
I'm running Ubuntu Edgy, I use vim for editing, and the TagList + my RailsTagList patch (http://en.logilogi.org/HomE/WyboWiersma/RailsTagList) vim-plugin for file browsing within projects, the console for between.
Also don't miss the rails.vim plugin if you decide to go for Vim.
Wybo
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