Slack is a place where your team comes together to collaborate, important information can be found by the right people, and your tools pipe in information when and where you need it. Channels. Communication in Slack happens in channels, organized by project, topic, team, or whatever makes sense for you.
Messaging
SignalWire
Build advanced communications capabilities like programmable voice, messaging, and video on the most powerful and widely deployed communications platform in the world.
Twilio
Twilio brings a powerful API for phone services enabling companies to make and receive phone calls, and send and receive text messages.