When you want to pair program with someone far away, what do you use? I just read about Collide:
https://lwn.net/Articles/521647/
https://code.google.com/p/collide/
Collide has "line numbering, syntax highlighting, auto-completion, and real-time file tree manipulation" but the syntax highlighter doesn't support PHP yet, just JavaScript, Python, CSS, and HTML.
Do any of you use Cloud9, Brackets, emacs + xhost, or some other tool/service? Do you recommend them? http://etherpad.wmflabs.org/pad/ is all very well and good but it doesn't support syntax highlighting.