Bit of an odd one, this.
Evernote keeps opening when I start up my Mac and login. I don't want it to. Happy for Evernote helper to sit in the background, but I don't want the program to open.
I've turned off 'Open in Login' on the Dock item. I've done the Preferences -> Users and Groups -> Login item and only the Helper is listed there. I'm quitting the program when it opens, not just closing its windows, so it shouldn't be a 'Reopen windows when logging back in' function of OSX.
I barely use Endnote, because at one point it made it really annoying to access notebooks in the free interface, and it just lost me forever at that point. So I'm likely to just migrate my notes elsewhere and uninstall it. But if I'm having this problem, other people probably are, too, people who maybe aren't as jaded as me and could be saved as potential users.