Our team started using Slack recently and I'm with @chirmer, it's an amazing collaboration tool. I've also been a heavy Evernote user for a long time, so I often find myself really wishing that the Evernote/Slack integration were there. So many startups are out there pushing work chat, and somehow Slack has managed to nail it. Existence proof that even in a very crowded field, there's room for a truly excellent design to dominate. I'm afraid the EN work chat didn't hit the mark. Instead of wading into the workforce chat space, I wish they had fixed some of the fundamental flaws with their note sharing model and brought it up to par with the equivalents from Dropbox and Google Drive.