Nacho Analytics offers a unique and valuable insight into the customer base of Slack with their cutting-edge analytics platform. By leveraging click stream data from millions of users, Nacho Analytics provides a mirror image of Slack's analytics view. This allows users to gain a deeper understanding of the traffic and activities taking place on Slack's website.

Through this analysis, it becomes apparent that Slack's biggest enterprise customers include well-known software companies such as IBM, Oracle, Lyft, SAP, and VMWare. In fact, software developers make up a significant portion of Slack's early adopter customers, with numerous integrations available for software development tools. Additionally, Slack's customers predominantly consist of software-heavy companies, even among those who don't specifically use the enterprise version.

However, there are also notable customers from global educational institutions and open-source software initiatives. As for Slack's potential, the data is mixed, indicating the possibility of breaking through to a broader market or remaining a tool primarily for software enthusiasts. Nonetheless, the widespread preference for Slack over email among various demographics hints at its potential to revolutionize communication across all businesses.

Beyond software companies, traditional industries and media companies, such as Walmart, Nike, NYTimes, and NBCUniversal, also utilize Slack's services. With its strong brand equity and market-leading position, Slack enjoys a significant advantage that may enable it to dominate the mainstream enterprise and SMB market