Desktop.com has proved to be a worthy alternative to Slack, and with more benefits to our entirely virtual small team scattered around the world. In particular, it's very easy to chat and conduct video calls and screen shares. We utilize the SSO to access all of our web apps and links that we have created among various internal desktops. As with any SaaS tool, there can be features or tweaks that I would like to see, and to that end the support is fantastic.