Why ask me about Slack? I run a design agency called MetaLab. You may not have heard of us — we usually work behind the scenes — but I can pretty much guarantee that you’ve used something that we’ve designed. In late 2013, Slack hired us to help them turn their early prototype into a polished product. We did the logo, the marketing site, and the web and mobile apps, all in just six weeks from start to finish. Apart from a few tweaks here and there, much of the product remains unchanged since the day we handed our designs off to the team at Slack.