To add something to the "what else":

• It's the same IDE regardless of language. I use a forest of xterms with editors in some, manual pages in others, and tests/runs in yet another set. Whether I code in Perl, C, shell, SQL, LaTeX or something else. I even do mail that way, although usually I don't have a need for manual pages, or test runs.
• I haven't had the need to change my IDE for the past 20+ years or so. That's right. I spend *0* time learning IDEs the past 20 years. Whether I use Solaris, HP-UX, AIX, Linux or CIGWIN. It's just a matter of untarring a bunch of dotfiles and maybe installing a package or two and it just works. (Ok, so I learned how to use RPMs in the past 20 years -- but I had to do that anyway).
• The most basic components of my IDE (vi + man) are just on every platform I've ever worked on (is it POSIX compliant? You get vi and man). Install the OS, and you have them. I can have the core of my IDE up and running even before the install CD has stopped spinning.