ssh and programming editor app

Need some editor that does syntax highlighting, formatting/indention, code completion, ascii codes, partial code collapsing, shows diffs, can save text files in *nix format, useful for multiple languages, has a Linux equivalent that I can get in Ubuntu/Debian. I will be programming in assembler, Python, Java, C, C++, Perl, bash, and maybe VB. Most that I've found concentrate on HTML, only do half of what I want, are non-free and most of all, are not portable. I have Linux LiveCDs, but want to do some work/study in various places where booting another OS might freak some people out and get me in trouble.

Putty would also be a nice portable app too. I'm not sure if you can just run its executable or what system files it uses, but I think it does place files in more than one directory after install. It would be nice to have putty with all the keys that you've exchanged with remote PCs/servers and all your settings/profiles saved in one portable place. I have a buddy that has somewhere near 100 machines he must log into at one time or another and he says it is a hassle everytime he has to reinstall or install in another location.

I see that these have been discussed here, but quite a long time ago. It would be nice to have official portable apps executables and in the same place as the other fine apps.

Thanks.
Brian