Anything but Aptana Studio
I have not had good luck with Aptana... So Please give me a list of your favs.
And how you would open up the files with git onto the program 
<3
Rubymine.
Has full support for git (and everything else you can think of)
gedit.
Noooo! Really? You would use gedit for day-to-day project editing? (I use it to tweak the occasional file - but wouldn't want to use it exclusively all day long).
Although I did work on a project next to a guy who used vi for *all*
his Rails development; in one console, without assistance even by
Screen... it takes all sorts
I'm liking the look and feel of Sublime - but I still can't drag
myself away from the integrated debugging in Netbeans and Rubymine to
switch to one of these lighter editors 
Rubymine.
gedit.
Noooo! Really? You would use gedit for day-to-day project editing? (I use it to tweak the occasional file - but wouldn't want to use it exclusively all day long).
Although I did work on a project next to a guy who used vi for *all* his Rails development; in one console, without assistance even by Screen... it takes all sorts
I'm liking the look and feel of Sublime - but I still can't drag myself away from the integrated debugging in Netbeans and Rubymine to switch to one of these lighter editors
Netbeans does not follow rails anymore and rubymine is not free.
For ubuntu there is a gedit plugin called gmate. Try it.
emacs
I'm working happily on Netbeans 6.9.1 [1], and the OP didn't ask for a "free" IDE - just for an IDE.
[1] There are some plugins to puts Rails support back into Netbeans 7, but they're not quite 100% yet (no debugging, among other features, IIRC)
Hi,
If you don't want to use aptana then you should try rubymine which is best IDE than aptana i used both.
Mathew S. wrote in post #1032420:
Hi, RubyMine is one of the best IDE.
It might have been more helpful then to have mentioned that in your "gedit" post earlier.
i've been using emacs with rinari and magit.
(2011/11/18 11:17), Mathew S. wrote:
Have you tried RubyMine. Itās so cool
I"ve been using geany lately. heard redcar was good and tried to install but ran into some problems with that. haven't had a chance to really debug them yet.
gedit with some plugins called āgmateā, (search on github) is a lil closer a textmate. sublime is a cool ide too .redcar is a textmate clone, not equal, but its closer, check it out on github (ITS A GEM).
on my day i use a gedit, its fine to me
Rubymine.
Has full support for git (and everything else you can think of)
Hiā¦ just curious if anyone knows the answer to this, while on the topic: I am considering changing to RubyMine from vim (will probably use the vim plug in though for rubymine). Anyhow, the reason I am thinking about it is singular: RubyMine allows you to right click and look up a methodā¦ which I see as incredible, especially for making it easy to delve in to gems and the ruby source code itself. Wondering if anyone knows of any other editors/ideās that enable this? As the drawback of rubymine is that it seems to take a lot of memory and concerned that it might be slow.
Thanks!
I'm a proud user of emacs with rinari, magit (excellent git mode for emacs), textmate-mode and a bunch of other stuff. The main thing is to choose a tool that fits your needs, and that you can feel comfortable with.
It's weird how few people said vim, I thought there were more vimers out there
There is really no point in bringing it up. If you are looking for an IDE you will not like vim.
Been using vi/vim since my first bsd-4.2 installation on a Vax. Norm
I have rubymine, but find myself using redcar quite a bit lately