Nexmo - Nexmo is a simple two way SMS API with global reach and wholesale rates
Geekbot - Discover how to organise asynchronous stand up meetings in Slack and keep your team synced using Geekbot. Start your free trial today!
MessageBird - Reach 7 billion phones in seconds via SMS, Chat & Voice. Try it for free and improve your communication.
Chili Piper - Chili Piper is an intelligent calendar for Sales teams, to book their own meetings or set appointments for other teams.
Plivo - Plivo simplifies your customer engagement.
Standuply - Run daily standup meetings and track your metrics in Slack