[candyman]

This is a little off topic but related because I keep looking at these source code editor posts. I have always been looking for a little "sidekick" editor that is always in the background that you can invoke with a ctrl-<char> and it at least maintains just a single local data store. (It's not a general purpose text editor like Sublime.) Sort of like the old Notational Velocity but able to be invoked very quickly anytime. The file could just be synced across computers using Dropbox or similar but it would be nice if it also allowed simultaneous editing of the file.