Floobits lets you collaborate on code in real-time across multiple text editors and IDEs.
You need a Floobits account. Create one at https://floobits.com Features include being able to see other people's cursor and highlights, being able to summon, and also follow edits automatically.
Recent change notes
You can now summon individual users to your cursor position. Just right-click on them in the user list and choose "summon".