Is there a good alternative to TogetherJS? Its GitHub hasn't had any activity for months, and this post says its currently dead with its future uncertain.
The feature most unique to TogetherJS as apposed to say, ShareJS, is the ability to see another person's cursor for use in troubleshooting/remote assistance.
Try ShareJS, it is similar! ShareJS is an Operational Transform library for NodeJS & browsers
http://sharejs.org/