Hi Everyone  Our company has been using Slack for a while now. Overall, it’s a solid app with a ton of great features. We mainly use it for internal chat. Now, though, the company wants to improve our communication with customers, so we are looking alternate for instant messaging software.  I randomly searching on google and i found the blog Enterprise collaboration software from the contus, https://www.contus.com/blog/best-enterprise-collaboration-software/