I want my team to collaboratively edit an HTML page.
- Everyone must see other people's changes in real-time (like Google Docs). It makes it so much easier to avoid conflicts.
- Preview must show the current page, in real-time, (IFrame or separate page, best if both are possible)
- Must work with pages like this (CSS, JQuery performing authentication (admin/admin in the example), AJAX)
Cloud9 is very close to providing this, but, unfortunately, a user's changes are not sent to the other until xe presses "Save", which is a major inconvenience and a constant source of conflicts.
Software or web app. Ideally, Open Source with commercial support and web app free for Open Source projects and limited trials. Non-open source and non-free is OK too.