html - Pair programming application for two or more people -

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i'm teaching web development basics free , i'd give kind of live interactive tutorials.

i'd find app can connect server's ftp defined folder , let users edit files live other can see or can edit , can see it. should have chat can talk them , tell them what. want editor simple possible. it's html, css, php , javascript.

it should immidiettely save files whenever edited user's can see difference while have opened page. example, have opened myserver.com/tutorial/index.html , everytime edit file, see difference.

sorry if question doesn't fits here don't know else ask.

thank you.

what cloud9 ide? doesn't use ftp, can (and freely) put code on 1 or more github projects, , let users hack them in c9.


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