Zoho Cliq

Slack is equally good but as we went for ZohoOHO CRM it made sense to go in for Zoho Cliq to benefit from the integrations.
Zoho Cliq is intuitive and user-friendly with no extra learning required.
Google Chat had very limited capabilities and was not very user-friendly.
Microsoft Teams though seemed simple, required relearning and training and hence was not adopted.

My all-time favorite tool in this space is Slack but Cliq is a close second. Cliq is essentially built to mimic Slack but is not quite as cutting-edge with some of their features. We opted to use Cliq over Slack because of the interconnectedness it offered with all the other tools our team uses to keep our business thriving.

Essentially the same style of platform. Aside from any "bots" (which I don't use anyways), they appear to do the same thing. But Zoho Cliq comes packed into the Zoho One platform. It's a useful component in a suite of communication tools that allows our office to work and speak to one another in an abundance of ways.

The owner chose this system after many months of evaluation.

We selected Zoho because it was already a part of the Zoho toolset we were using. They offered a free trial which was a big help in our purchasing decision. Our team looked at one other alternative but we weren't satisfied with the pricing quote we got from them and the fact that we were already using other Zoho apps made our decision easier.

Functionality wise Zoho Chat fairs pretty well against the other options. I still use all the other options as I need to be flexible in how I communicate with clients. It is the integration into the ZohoCRM & Cliq that puts Zoho Chat above the others and is why I try to encourage clients to move across to the app.