Slack is a business messaging app that connects people with the information they need. By bringing people together to work as if they were part of the same team, Slack transforms the way organizations communicate.

Slack helps you work in a more connected, flexible and inclusive way. It offers an easier, more organized way to work. Instead of endless email chains, in Slack you can create channels: flexible spaces for all the people, tools and files you need to get work done.

The price depends on the version you decide to use. The free version costs $0. The Standard version costs $6.67 per active user, per month and the Plus version $12.50 per month. 

For further information consult: https://slack.com/intl/es-es/